Researchers are using optogenetics in animal models to study the cellular mechanisms of schizophrenia, Alzheimer's disease, Parkinson's disease, epilepsy, depression, and addiction

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Childhood trauma leads people to develop psychosis

Mental health nursing expert Jill Archibald provided evidence to the Lampard Inquiry that Oxevision cameras can increase patient paranoia and cause some patients to scream at the device.

Early Alzheimer's symptoms such as hearing impairment can reduce engagement in physical activity, triggering accelerated cognitive and memory decline.

A UK study of 1,139 people over age 50 found that moderate to vigorous physical activity reduced dementia risk by 34% to 50% over eight to ten years.

Study co-author Dr. You Zhou stated that combining gut bacteria and digestive chemicals distinguished individuals with mild cognitive impairment from healthy people with high accuracy.

Brain health benefits against Alzheimer's tau protein accumulation appeared at 3,000 steps daily, with an optimal protective plateau between 5,000 and 7,500 steps daily.

A study tracking almost 300 older adults found that physical activity did not reduce toxic amyloid plaques, but reduced signs of dementia by almost half in more active participants.

In older adults with early brain signs of Alzheimer's, physical activity reduced the accumulation of misfolded tau proteins in specific brain areas over nine to 11 years, according to a study tracking participants with pedometers.

A 2022 UK study tracking 78,430 people for seven years using wrist accelerometers found a 25% reduction in dementia risk at 3,800 daily steps, rising to 50% at 9,800 steps.

Cardiovascular and stroke risk factors including elevated cholesterol, poor sleep, high blood pressure, and diabetes increase dementia risk alongside physical inactivity.

In England, estimated financial costs from adverse childhood experiences were £37.8 billion for mental illness and £22.7 billion for smoking, while in Wales each accounted for £1.8 billion.

Valdo Calocane was diagnosed with paranoid schizophrenia in 2020, had been sectioned four times under the Mental Health Act, and pleaded guilty to manslaughter on the grounds of diminished responsibility in January 2024

A study of U.S. health data published in Lancet Psychiatry reported that GLP-1 users with schizophrenia and type 2 diabetes were less likely to be admitted to a psychiatric hospital than patients taking other types of diabetes medication

A study of U.S. health records published in Lancet Psychiatry found that patients with both schizophrenia and type 2 diabetes who were prescribed GLP-1 receptor agonists had a 24% lower risk of psychiatric hospital admission than those not taking GLP-1s

Patients with schizophrenia and type 2 diabetes prescribed GLP-1 receptor agonists were 29% less likely to visit an emergency department for a mental health crisis compared to those not taking GLP-1s, according to a Lancet Psychiatry study

The authors of the Lancet Psychiatry study published in October 2026 emphasized that randomized controlled trials are required to confirm whether GLP-1 receptor agonists directly reduce psychiatric acute care needs in patients with schizophrenia

Study authors advised that GLP-1 receptor agonists should not be considered a primary psychiatric treatment or prescribed solely to reduce psychiatric hospital admissions based on current evidence

The American College of Obstetricians and Gynecologists noted that more than one in three perimenopausal and postmenopausal women report depressive symptoms

In an ongoing Phase 1/2a trial in healthy volunteers, Arrowhead Pharmaceuticals' experimental RNA interference therapeutic ARO-MAPT administered via subcutaneous injection reduced cerebrospinal fluid total tau protein by an average of 73% at day 105 in the highest dose cohort receiving 12.8 mg/kg on days 1 and 15, with maximum individual reduction reaching 85%.

The Phase 1/2a trial of ARO-MAPT aims to enroll 112 total participants, expanding from healthy volunteers into patients with early Alzheimer's disease receiving up to five subcutaneous injections, with further data updates expected in 2027.