Tag: depression

  • Most stroke survivors can safely take two types of common antidepressants

    Most stroke survivors can safely take two types of common antidepressants

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    Most stroke survivors were able to safely take two types of common antidepressants, according to a preliminary study to be presented at the American Stroke Association’s International Stroke Conference 2024. The meeting will be held in Phoenix, Feb. 7-9, and is a world premier meeting for researchers and clinicians dedicated to the science of stroke and brain health.

    Among people with ischemic (clot-caused) stroke, those who began taking an antidepressant known as an SSRI (selective serotonin reuptake inhibitor) and/or an SNRI (serotonin and norepinephrine reuptake inhibitor) for the common conditions of post-stroke depression and anxiety, did not have an increased risk of hemorrhagic (bleeds) stroke or other serious bleeding. This included people taking anticoagulation medications. There was, however, an increased risk of hemorrhagic stroke among stroke patients taking two anti-platelet medications, also called dual anti-platelet therapy or DAPT.

    Mental health conditions, such as depression and anxiety, are very common yet treatable conditions that may develop after a stroke. Our results should reassure clinicians that for most stroke survivors, it is safe to prescribe SSRI and/or SNRI antidepressants early after stroke to treat post-stroke depression and anxiety, which may help optimize their patients’ recovery. However, caution is needed when considering the risk-benefit profile for stroke patients receiving dual anti-platelet therapy because we did find an increased risk of bleeding among this group.”


    Kent P. Simmonds, D.O., Ph.D., study lead author, third-year physical medicine and rehabilitation resident, University of Texas Southwestern Medical Center in Dallas

    According to the American Heart Association’s Heart Disease and Stroke Statistics 2024 Update, when considered separately from other cardiovascular diseases, stroke ranks fifth among all causes of death, behind diseases of the heart, cancer, COVID-19 and unintentional injuries/accidents. Approximately one-third of stroke survivors develop poststroke depression. If left untreated, depression may affect quality of life and reduce the chances for optimal poststroke recovery such as returning to their usual daily living activities without assistance.

    The most common classes of antidepressants are SSRIs or SNRIs, and they are widely used and effective for treating anxiety and depression. However, they may not be prescribed at all or early enough after a stroke, when the risk of depression or anxiety is particularly high, due to concerns that they may increase the risk of a hemorrhagic stroke or other serious types of bleeding.

    Researchers looked at the frequency of serious bleeding among hundreds of thousands of stroke survivors who took different types of SSRI and/or SNRI antidepressants (such as sertraline, fluoxetine, citalopram, venlalfaxine). Serious bleeding was defined as bleeding in the brain, digestive tract; and shock, which occurs when bleeding prevents blood from reaching the body’s tissues.

    Researchers also investigated serious bleeding among stroke survivors who took antidepressants combined with different types of blood-thinning medications that are used to prevent future blood clots. These blood-thinning medications may include either anticoagulants or antiplatelet medications. Anticoagulants are prescribed as a single medication and include medications such as warfarin, apixaban and rivaroxaban. Antiplatelet medications may be prescribed as either a single medication (commonly aspirin) or two types of antiplatelet medications can be used in dual antiplatelet therapy. DAPT includes aspirin plus another antiplatelet medication called a P2Y12 inhibitor (such as clopidogrel, prasugrel or ticagrelor).

    The study found:

    • SSRI and SNRIs were generally safe to start during the important early stages of recovery as patients taking these medications were not more likely to develop serious bleeding compared to stroke survivors who did not take an antidepressant. This included ischemic stroke patients who are also taking anti-coagulation therapy.
    • An increased risk of serious bleeding occurred when SSRIs or SNRIs were taken in combination with DAPT treatments (aspirin and blood thinners). However, the overall risk remained low as serious bleeding events were rare.
    • Among ischemic stroke patients on antidepressant medications, there was a 15% increase in the risk of serious bleeding when taking medications from classes such as mirtazapine, bupropion and tricyclics compared to SSRI/SNRIs.

    “Maximizing rehabilitation early after a stroke is essential because recovery is somewhat time-dependent, and most functional gains occur during the first few months after a stroke,” Simmonds said. “Fortunately, dual antiplatelet therapy is often administered for 14, 30 or 90 days, so, when indicated, clinicians may not need to withhold antidepressant medications for prolonged periods of time. Future research should investigate the risk of bleeding associated with the use of anti-depressant and anxiety medications among patients with hemorrhagic or bleeding stroke.”

    According to a 2022 American Heart Association scientific statement, social isolation and loneliness are associated with about a 30% increased risk of heart attack or stroke, or death from either. “Depression may lead to social isolation, and social isolation may increase the likelihood of experiencing depression. The current study helps answer safety issues around the use of antidepressants for treatment of mental health issues that may develop after a stroke,” said Crystal Wiley Cené, M.D., M.P.H., FAHA, chair of the writing group for the Association’s scientific statement, and a professor of clinical medicine and chief administrative officer for health equity, diversity and inclusion at the University of California San Diego Health. Dr. Cené was not involved in this study.

    Study details and design:

    • The retrospective study included electronic medical records data from 666,150 ischemic stroke patients from over 70 large health care centers in the United States: 35,631 were taking SSRI/SNRI antidepressant medication, and 23,241 were taking other antidepressants; however, most (607,278) were not taking any antidepressant.
    • Patients were treated at 70 health care centers over 20 years.
    • Patients were identified from electronic medical records for 2003 through 2023.

    The study had some limitations. Researchers used statistical methods to adjust for differences among the groups that may not have accounted for all the important differences among the groups. The study also did not account for the dosage, duration, or number of antidepressants taken by participants, which may have affected the results.

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  • Berry consumption shown to lower stress-related disease risk in US adults

    Berry consumption shown to lower stress-related disease risk in US adults

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    In a recent study published in the Journal Nutrientsresearchers investigated the association between berry consumption and physiological dysregulation from stress responses measured by allostatic load (AL) scores using publicly available data from the National Health and Nutrition Examination Survey (NHANES) conducted among adult population in the United States (US) during 2003–2010.

    Study: Berry Consumption in Relation to Allostatic Load in US Adults: The National Health and Nutrition Examination Survey, 2003–2010. Image Credit: Bojsha/Shutterstock.comStudy: Berry Consumption in Relation to Allostatic Load in US Adults: The National Health and Nutrition Examination Survey, 2003–2010. Image Credit: Bojsha/Shutterstock.com

    Background

    AL multisystem measurement framework uses 14 biomarkers of multiple physiological systems, including the cardiovascular, autonomic, metabolic, and immune systems, to measure the severity of physiological dysregulation due to incremental effects of stress overall and in specific systems.

    A higher AL score, calculated by summing the risk indicators for each biomarker within each domain, indicates more dysregulation due to stress, which may manifest as debilitating stress-related health conditions, such as physical and cognitive decline, mental disorders (e.g., depression), diabetes, cardiovascular diseases (CVDs), cancer, and even mortality.

    The high levels of specific polyphenols and other nutrients in berry fruits have garnered the attention of researchers because they protect against inflammation and cardiometabolic diseases due to their potent antioxidant properties.

    Raspberries and blackberries have the highest levels of polyphenol ellagic acid, whereas strawberries have high levels of anthocyanins. 

    Study methodology

    In this study, researchers hypothesized that more berry consumption would lower AL scores.

    They collected data from US adults enrolled in the 2003–2010 NHANES, including their demographic, dietary, and medical information via at-home interviews, mobile examination center (MEC) visits, and phone interviews.

    Trained staff then measured their total berry intake using two 24-hour dietary recalls.

    People consume berries often as mixed and processed foods. So, the team used an algorithm to identify berry intake from food records, and those consuming at least one cup of equivalent berry or berry subtype fruits (strawberries and blueberries) in a food recall were considered berry consumers. 

    The researchers used population weight-adjusted multivariable linear regression models to evaluate the effect of berry intake on AL composite scores and biomarkers.

    These models adjusted for potential confounders, such as age, dietary and sociodemographic, and lifestyle factors.

    Results

    Of 15,620 US adults who completed two 24-hour recalls, only 7,684 individuals attended a morning examination and provided complete information on the AL biomarkers.

    From these, ~19.3% of adults (n=1485), of which 61.9% were females, were berry consumers.

    Berry consumers, i.e., those who ate strawberries, blueberries, or any berries, had significantly lower mean AL composite scores than non-consumers.

    The relationship between greater berry intake and lower average AL composite scores was dose-dependent (p-trend< 0.05) and remained robust after adjusting for all confounders.

    Compared to non-users, berry consumers had lower levels of biomarkers in each AL domain. Accordingly, the mean cardiovascular and metabolic domain scores for total berry consumers were 4.73 and 2.97 vs. 4.97 and 3.1 for non-consumers.

    Compared to non-users, cardiovascular and metabolic domain scores for strawberry and blueberry consumers were 4.73 vs. 4.95; 2.99 vs. 3.1; 4.6 vs. 4.95; 2.92 vs. 3.11, respectively.

    Berry consumers also had markedly lower average AL immune and autonomic scores (1.52 vs. 1.56) and (2.49 vs. 2.57), respectively, relative to non-consumers.

    However, this slightly varied with the berry type consumed. So, while Blackberry consumers had markedly lower mean autonomic scores than non-consumers, no difference was noted for total berry consumers.

    Additionally, blackberry consumers had lower triglycerides and C-reactive protein (CRP) levels, while cranberry juice consumers had lower pulse rates and fewer white blood cells.

    Furthermore, consumers of blueberries, strawberries, and raspberries had lower fasting glucose, fasting insulin, triglycerides, and homeostatic model assessment for insulin resistance (HOMA-IR) than non-consumers. 

    Conclusions

    The present study findings suggest that consumption of berries is associated with lower AL composite and domain scores and may potentially reduce stress-related physiological dysregulations and prevent cardiovascular and metabolic disorders in the US adult population. 

    Consistent with previous studies, these findings may be attributable to the protective effects of flavonoids, polyphenols, and other components in berries that act against multisystemic dysregulations.

    In particular, polyphenols interact with gut microbiota through the gut–brain–axis signaling pathway fostering resilience to stress-induced physiological dysregulation.

    Likewise, anthocyanins, a type of flavonoid, have a beneficial effect on cardiometabolic factors. Furthermore, whole berries have abundant dietary fibers that decrease glucose absorption.

    Future research should further validate these results using different assessment methods in different population cohorts.

    Journal reference:

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  • Pioneering repository aims to raise visibility and awareness about people with mental illnesses

    Pioneering repository aims to raise visibility and awareness about people with mental illnesses

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    Metaphors are not just literary devices for writers to embellish their texts. They are linguistic tools used in everyday life, in most cases with the aim of better understanding and conveying the reality of the world around us. Researchers at the Universitat Oberta de Catalunya (UOC) have developed the first Mental Health Metaphor Dictionary, a pioneering repository that brings together and exemplifies the most important conceptual metaphors used in Spanish by people with serious mental illnesses, mainly schizophrenia, bipolar disorder, depression and obsessive-compulsive disorder. The repository is based on first-person accounts of what it is like to live with a particular mental disorder and can be useful for mental health communicators and professionals, relatives of people diagnosed with one of these illnesses and even for the people with these disorders themselves.

    According to Marta Coll-Florit and Salvador Climent Roca, researchers from the Linguistic Applications Interuniversity Research Group (GRIAL) of the Faculty of Arts and Humanities, who coordinated the development and creation of the repository, “this is a tool to raise visibility and awareness in society about the suffering of people with mental illnesses. We believe that this dictionary can help us all to reflect on the way we talk about mental health and to realize the power of our words.”

    Metaphors are not neutral

    The dictionary is one of the results of the MOMENT project, which seeks to identify the metaphors used in the field of mental health and the underlying conceptualizations. The researchers said: “The metaphors we use are not neutral, but have the power to highlight certain aspects of reality while potentially obscuring others. They’re likely to reveal latent ideas that don’t come out explicitly in our discourse, but may be filtered through figurative language. For example, it’s not the same to say ‘you have to fight your illness’ as it is to say ‘you have to live with your illness’: the first metaphor emphasizes the struggle between the person and the disorder, whereas the second emphasizes the person’s acceptance of their situation.”

    One of the project’s main research conclusions is that this type of metaphor can have beneficial or harmful uses in public discourse and in the discourse of those affected and those who interact with them. “Beneficial uses are those that convey empowerment, control or positive emotions; in other cases, they look to present a problem by separating the negative aspects from the situation as a whole,” they explained. Metaphors that serve these purposes are called “empowering metaphors” and are recommended for use “in public discourse and in relationships with people diagnosed with mental disorders”. The researchers added that “their use should be encouraged by the people with these disorders themselves in order to avoid pejorative views of their situation”.

    A window into the feelings of people with mental disorders

    The dictionary is organized both alphabetically and thematically into three broad areas: metaphors of living with a mental disorder, metaphors of communication and social context, and metaphors of medicine and professional practice. All the metaphors are grouped around different key concepts and come with several examples. As the researchers explained, by systematizing and exemplifying the metaphors used by these people, we can gain a deeper insight into what they “really think and experience”. It is also a way for them to feel “more understood and less alone, realizing that their feelings and experiences are shared by more people.”

    The advantages of blogs and social media

    One of the key features of the repository is that all the metaphors are taken from texts posted in Spanish on blogs or on X (formerly Twitter). These communication channels have an important advantage over other written media. “The authors’ words are not filtered by an external interviewer, but come from a genuine and spontaneous willingness to share a lived experience on social media. In addition, individuals can use the relative anonymity of the internet to reveal things they would not, for example, discuss in a face-to-face research setting. For this reason, the range of metaphors found is much wider than in previous similar studies.”

    This approach has been useful in collecting the many metaphors in the repository that criticize the medical profession or highlight the suffering caused by social stigma and discrimination, showing “how patients seek greater empathy and understanding of their suffering from both medical staff and the wider community”. In this regard, the researchers stressed that the dictionary can be valuable in promoting “more respectful discourse” on mental health by public institutions and the press.

    A tool for detecting psychopathology

    Finally, the Mental Health Metaphor Dictionary can be used as a gateway to detecting psychopathology. “Knowing which conceptual metaphors are most commonly used to express mental distress could help families or people close to those affected to identify possible disorders,” the researchers explained. Likewise, although it cannot be used directly as a diagnostic tool, it could be used to “identify which stage of the disorder the patient is in, according to the type of metaphors used, or to analyze whether therapy has been successful”.

    A pioneering initiative

    This collection of metaphors is the first of its kind. While there are a number of domain-independent repositories of conceptual metaphors based on English texts, there are very few domain-specific repositories in other languages. In fact, in a review carried out by the UOC researchers, they found only two repositories focused on specific subject areas: cognition and health. “Although these subject repositories are potentially the most useful for society, they are the rarest,” they concluded.

    Source:

    Journal reference:

    Coll-Florit, M., & Climent, S. (2023). Metaphor repositories: the case of the mental health metaphor dictionary. Digital Scholarship in the Humanities. doi.org/10.1093/llc/fqad058.

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  • Ketamine therapy for mental health a ‘wild West’ for doctors and patients

    Ketamine therapy for mental health a ‘wild West’ for doctors and patients

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    In late 2022, Sarah Gutilla’s treatment-resistant depression had grown so severe, she was actively contemplating suicide. Raised in foster care, the 34-year-old’s childhood was marked by physical violence, sexual abuse, and drug use, leaving her with life-threatening mental scars.

    Out of desperation, her husband scraped together $600 for the first of six rounds of intravenous ketamine therapy at Ketamine Clinics Los Angeles, which administers the generic anesthetic for off-label uses such as treating depression. When Gutilla got into an Uber for the 75-mile drive to Los Angeles, it was the first time she had left her home in Llano, California, in two years. The results, she said, were instant.

    “The amount of relief I felt after the first treatment was what I think ‘normal’ is supposed to feel like,” she said. “I’ve never felt so OK, and so at peace.”

    For-profit ketamine clinics have proliferated over the past few years, offering infusions for a wide array of mental health issues, including obsessive-compulsive disorder, depression, and anxiety. Although the off-label use of ketamine hydrochloride, a Schedule III drug approved by the FDA as an anesthetic in 1970, was considered radical just a decade ago, now between 500 and 750 ketamine clinics have cropped up across the nation.

    Market researcher Grand View Research pegged industry revenues at $3.1 billion in 2022, and projects them to more than double to $6.9 billion by 2030. Most insurance doesn’t cover ketamine for mental health, so patients must pay out-of-pocket.

    While it’s legal for doctors to prescribe ketamine, the FDA hasn’t approved it for mental health treatment, which means that individual practitioners must develop their own treatment protocols. The result is wide variability among providers, with some favoring gradual, low-dosage treatments while others advocate larger amounts that can induce hallucinations, as the drug is psychedelic at the right doses.

    “Ketamine is the wild West,” said Dustin Robinson, the managing principal of Iter Investments, a venture capital firm specializing in hallucinogenic drug treatments.

    Ketamine practitioners stress that the drug’s emergence as a mental health treatment is driven by a desperate need. Depression is the leading cause of disability in the United States for individuals ages 15-44, according to the National Institute of Mental Health, and around 25% of adults experience a diagnosable mental disorder in any given year.

    Meanwhile, many insurance plans cover mental health services at lower rates than physical health care, despite laws requiring parity. Thus many patients with disorders receive little or no care early on and are desperate by the time they visit a ketamine clinic, said Steven Siegel, chair of psychiatry and the behavioral sciences at the University of Southern California’s Keck School of Medicine.

    But the revelation that “Friends” star Matthew Perry died in part from a large dose of ketamine, along with billionaire Elon Musk’s open use of the drug, has piqued fresh scrutiny of ketamine and its regulatory environment, or lack thereof.

    Commercial ketamine clinics often offer same-day appointments, in which patients can pay out-of-pocket for a drug that renders immediate results. The ketamine is administered intravenously, and patients are often given blankets, headphones, and an eye mask to heighten the dissociative feeling of not being in one’s body. A typical dose of ketamine to treat depression, which is 10 times lower than the dosage used in anesthesia, costs clinics about $1, but clinics charge $600-$1,000 per treatment.

    Ketamine is still shadowed by its reputation as the party drug known as “Special K”; Siegel’s first grant from the National Institutes of Health was to study ketamine as a drug of abuse. It has the potential to send users down a “K hole,” otherwise known as a bad trip, and can induce psychosis. Research in animals and recreational users has shown chronic use of the drug impairs both short- and long-term cognition.

    Perry’s death in October raised alarms when the initial toxicology screening attributed his death to the acute effects of ketamine. A December report revealed Perry received infusion therapy a week before his death but that the fatal blow was a high dose of the substance taken with an opioid and a sedative on the day of his death — indicating that medical ketamine was not to blame.

    A variety of protocols

    Sam Mandel co-founded Ketamine Clinics Los Angeles in 2014 with his father, Steven Mandel, an anesthesiologist with a background in clinical psychology, and Sam said the clinic has established its own protocol. That includes monitoring a patient’s vital signs during treatment and keeping psychiatrists and other mental health practitioners on standby to ensure safety. Initial treatment starts with a low dose and increases as needed.

    While many clinics follow the Mandels’ graduated approach, the dosing protocol at MY Self Wellness, a ketamine clinic in Bonita Springs, Florida, is geared toward triggering a psychedelic episode.

    Christina Thomas, president of MY Self Wellness, said she developed her clinic’s procedures against a list of “what not to do” based on the bad experiences people have reported at other clinics.

    The field isn’t entirely unregulated: State medical and nursing boards oversee physicians and nurses, while the FDA and Drug Enforcement Administration regulate ketamine. But most anesthesiologists don’t have a background in mental health, while psychiatrists don’t know much about anesthesia, Sam Mandel noted. He said a collaborative, multidisciplinary approach is needed to develop standards across the field, particularly because ketamine can affect vital signs such as blood pressure and respiration.

    The protocols governing Spravato, an FDA-approved medication based on a close chemical cousin of ketamine called esketamine, are illustrative. Because it has the potential for serious side effects, it falls under the FDA’s Risk Evaluation and Mitigation Strategies program, which puts extra requirements in place, said Robinson. Spravato’s REMS requires two hours of monitoring after each dose and prohibits patients from driving on treatment days.

    Generic ketamine, by contrast, has no REMS requirements. And because it is generic and cheap, drugmakers have little financial incentive to undertake the costly clinical trials that would be required for FDA approval.

    That leaves it to the patient to assess ketamine providers. Clinics dedicated to intravenous infusions, rather than offering the treatment as an add-on, may be more familiar with the nuances of administering the drug. Ideally, practitioners should have mental health and anesthesia expertise, or have multiple specialties under one roof, and clinics should be equipped with hospital-grade monitoring equipment, Mandel said.

    Siegel, who has researched ketamine since 2003, said the drug is especially useful as an emergency intervention, abating suicidal thoughts for long enough to give traditional treatments, like talk therapy and SSRI antidepressants, time to take effect. “The solutions that we have and have had up until now have failed us,” Mandel said.

    The drug is now popular enough as a mental health treatment that the name of Mandel’s clinic is a daily sight for thousands of Angelenos as it appears on 26 Adopt-A-Highway signs along the 405 and 10 freeways.

    And the psychedelic renaissance in mental health is accelerating. A drug containing MDMA, known as ecstasy or molly, is expected to receive FDA approval in 2024. A drug with psilocybin, the active ingredient in “magic mushrooms,” could launch as early as 2027, the same year a stroke medicine with the active ingredient of DMT, a hallucinogen, is expected to debut.

    Robinson said many ketamine clinics have opened in anticipation of the expanded psychedelic market. Since these new drugs will likely be covered by insurance, Robinson advises clinics to offer FDA-approved treatments such as Spravato so they’ll have the proper insurance infrastructure and staff in place.

    For now, Sarah Gutilla will pay out-of-pocket for ketamine treatments. One year after her first round of infusions, she and her husband are saving for her second. In the meantime, she spends her days on her ranch in Llano where she rescues dogs and horses, and relies on telehealth therapy and psychiatric medications.

    While the infusions aren’t “a magic fix,” they are a tool to help her move in the right direction.

    “There used to be no light at the end of the tunnel,” she said. “Ketamine literally saved my life.”




    Kaiser Health NewsThis article was reprinted from khn.org, a national newsroom that produces in-depth journalism about health issues and is one of the core operating programs at KFF – the independent source for health policy research, polling, and journalism.

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  • Does visual impairment influence mental disorders?

    Does visual impairment influence mental disorders?

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    A recent Scientific Reports study investigated whether visual impairment (VI) affects mental disorders in the older population.

    Study: The association between visual impairment and mental disorders. Image Credit: ThomsonD/Shutterstock.comStudy: The association between visual impairment and mental disorders. Image Credit: ThomsonD/Shutterstock.com

    Background

    In 2020, about 1.1 billion people were living with some form of VI, which is a very common preventable disorder. Lifestyle changes and population aging are expected to increase this number in the coming years, and most of the burden is likely to fall on low- and middle-income countries (LMICs).

    Besides the economic costs, VI adversely affects various aspects of a person’s daily life. The elderly individuals are more vulnerable as they often have many co-existing problems.

    Prior research in Western and high-income countries has investigated the relationship between VI and mental health disorders, such as anxiety, depression, cognitive impairment, and suicide.

    VI’s psychological problems have received less attention as this is conceptualized as a physical problem. In Iran, no prior studies have analyzed VI’s psychological angle, and the current study is the first to fill this gap. 

    About this study 

    Given the absence of evidence and the urgent need for information for healthcare planning, this study explored the relationship between mental disorders and VI using the general health questionnaire (GHQ) to understand the psychological aspects of quality of life.

    It comprises 28 questions on physical symptoms, anxiety and insomnia, social dysfunction, and depression, which are scored on a 4-point Likert scale. 

    The sample consisted of 3,200 subjects, aged 60 years and above, from the Tehran geriatric eye study (TGES).

    Presenting visual acuity (PVA), as per the World Health Organization (WHO) guideline, was used to define VI. It was further categorized into blindness and low vision.

    Individuals with cognitive problems were excluded from the current study. Furthermore, diabetes was defined based on the HbA1c test, and to get a sense of economic variables, data on 13 household assets were collected. Through self-reporting, alcohol consumption and smoking data were obtained.

    Key findings

    Consistent with existing reports, a significant association was noted between VI and depression in the present study. Estimates indicated that depression or anxiety was experienced by about one-third of people with VI.

    This association was present even after confounders and background variables were accounted for. Previous research has documented similar findings, i.e., adults with self-reported VI were more likely to develop depression in the future.

    It is unclear whether the severity of VI is linked to depression. Some studies have documented that the more severe the VI, the more the chances of developing depression, while others have not found such a link.

    The bidirectional nature of the relationship between VI and depression has also been highlighted in previous studies, which have been mainly cross-sectional. 

    The depression coefficient in people with VI was lowered in the present study by controlling for confounders, such as age, income, and health status.

    This suggests the need to study the full set of factors governing the relationship between VI and depression so that the magnitude of the association can be pinned down accurately. 

    Here, increased anxiety in the presence of VI was also noted, and many researchers have not studied this association. One study documented anxiety in patients diagnosed with glaucoma, i.e., not severe VI.

    However, it must be acknowledged that anxiety can be the result of the worry of having to live with a disability. Anxiety levels were also lower in blind people than those with VI, which could be due to the lower participation of blind people in social activities.

    Moreover, anxiety levels have been shown to decrease with advancing age. Finally, this study also documented that individuals with VI were less prone to engage in physical activities.

    Conclusions

    In sum, VI was seen to be associated with an increase in depression, anxiety, and physical symptoms. However, most of the psychological disorders studied here could be due to confounding factors and not VI.

    The temporal sequence between mental disorders and VI could not be determined here. One possibility is that VI patients potentially develop more functional problems, which subsequently leads to more mental health problems. 

    Given that the tool used to measure the study outcomes was not similar to the ones used in previous studies, the findings reported here should be compared to those in other reports with caution.

    Further, due to the cross-sectional study design, the temporal sequence between mental disorders and VI could not be determined here. Other factors affecting VI, such as cataracts and refractive errors, were not accounted for.

    The study’s main strengths were the large sample size and careful examination by a trained and expert team. 

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  • Maternal happiness during pregnancy linked to child’s brain development

    Maternal happiness during pregnancy linked to child’s brain development

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    In a recent study published in the journal Nature Mental Health, researchers explored the relationship between maternal mental health and children’s brain development. Their results contribute to the medical understanding of the importance of the intrauterine environment and suggest that in addition to positive outcomes for the mother, emotional well-being during pregnancy can be an important protective factor for brain development in children.

    Study: Maternal positive mental health during pregnancy impacts the hippocampus and functional brain networks in children. Image Credit: Prostock-studio / ShutterstockStudy: Maternal positive mental health during pregnancy impacts the hippocampus and functional brain networks in children. Image Credit: Prostock-studio / Shutterstock

    Background

    Research suggests that depression, anxiety, and stress during pregnancy can have enduring adverse effects on the child’s brain development. Maternal anxiety and depression have been found to affect gray matter density in the medial temporal and prefrontal cortex as well as hippocampal growth.

    Maternal health factors can also modify the cortico-limbic system, which helps regulate stress responses and emotional states. These widespread effects have been observed to be more prominent in female children between birth and early childhood. These findings highlight the need to address prenatal mental health to promote brain development in children.

    However, emotional well-being is not merely the absence of mental illness but also includes the experience of positive emotions and mental affect. While the effect of positive maternal emotions on parenting behavior, mother-infant bonding, long-term mental health, and child development has been studied, its impacts on brain development have not been explored.

    About the study

    The study followed a longitudinal prospective birth cohort design to investigate the relationship between maternal well-being and brain development in 7.5-year-old children using magnetic resonance imaging (MRI). This age was chosen because it is a key neurodevelopmental period when significant cognitive processes and brain changes occur.

    Participants in the study included pregnant Asian (Malay, Indian, or Chinese) women in their first trimester who were recruited while they antenatal care at an ultrasound scan clinic in Singapore. For the MRI, children were included if they had a gestational age of more than 30 weeks and a birth weight of more than 2 kg to avoid the confounding effects of birth complications.

    The authors hypothesized that positive emotions during pregnancy would be associated with significant differences in brain structures, such as the amygdala and hippocampus as well as functional networks, such as the default mode and visual networks. The mental health of the mothers was assessed using the Beck Depression Inventory, the Edinburgh Postnatal Depression Scale, and the State-Trait Anxiety Inventory.

    Additionally, the survey included questions on socioeconomic status, relationships with friends and family, life stress, and other topics related to prenatal health and well-being. This information was used to construct an overall socio-environmental adversity factor and scores for four risk domains – personal, interpersonal, socioeconomic, and life stress.

    Findings

    The sample of participants who underwent the structural MRI included 381 children, of whom 369 also underwent the functional MRI procedure. After controlling for the overall socio-environmental adversity factor and the child’s age during the MRI, researchers found that more positive maternal emotions during the prenatal period were associated with a larger bilateral hippocampal volume in female children but not males. However, maternal positive emotions were not seen to be associated with cortical thickness or volumes of the thalamus, amygdala, lateral ventricles, or basal ganglia.

    In terms of functional networks, more maternal positive emotions were associated with higher functional connectivity between the right frontoparietal and visual association networks, salience and thalamo-hippocampal networks, and posterior default mode and attention networks. Notably, these results were significant after controlling for child sex and age as well as postnatal parenting stress and other risk factors. These outcomes were not, however, associated with anxiety or depressive symptoms during pregnancy.

    Conclusions

    These findings indicate that there may be a neural basis through which positive emotions during pregnancy are transmitted from the mother to her offspring during the early development of the brain. Of the significantly associated outcomes, only the change in the bilateral hippocampi differed between male and female children. This research implies that ensuring mothers’ mental health could lead to sustained benefits for offspring in terms of neural development.

    While the study has several strengths and offers novel insights, the authors acknowledged some limitations. While brain development was assessed through neuroimaging, data on maternal mood and well-being were collected through subjective reports and may, therefore, be subject to biases related to recall and social desirability. Self-reports of positive emotions may not be an adequate proxy for psychological well-being, a complex and multifaceted issue. The study participants were all Asian, leading to a lack of generalizability to other populations.

    Future studies can build on these findings by including individuals of other races and factoring in positive emotions during other stages (such as during the postnatal period). This work adds to a growing body of literature showing the transgenerational nature of mental health outcomes and the importance of ensuring that mothers and children are not just healthy but happy, too.

    Journal reference:

    • Maternal positive mental health during pregnancy impacts the hippocampus and functional brain networks in children. Qui, A., Shen, C., López-Vicente, M., Szekely, E., Chong, Y., White, T., Wazana, A. Nature Mental Health (2024). DOI: 10.1038/s44220-024-00202-8, https://www.nature.com/articles/s44220-024-00202-8

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  • Headset delivers electric current to ease depression at home

    Headset delivers electric current to ease depression at home

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    A headset that can be worn at home relieves symptoms of depression to a similar degree as antidepressants

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