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Meta Analysis

All articles tagged with #meta analysis

Global Mega-Analysis Finds Common Brain Signature Across Psychedelics
science2 days ago

Global Mega-Analysis Finds Common Brain Signature Across Psychedelics

An international mega-analysis pooling over 500 brain-imaging sessions from 267 participants across five countries shows that psychedelics (psilocybin, LSD, mescaline, DMT, ayahuasca) produce a shared brain fingerprint: weakening within-network connectivity and increasing cross-network communication, leading to a more flexible, less modular brain state. This two-part pattern explains common therapeutic and perceptual effects across diverse drugs and provides a benchmark to guide future research and regulatory considerations.

via Neuroscience News|
#brain-imaging#mental-health#meta-analysis
Modest but Real Gains from Collagen Supplements, Large Review Finds
health13 days ago

Modest but Real Gains from Collagen Supplements, Large Review Finds

A large synthesis of 113 clinical trials and 16 systematic reviews (nearly 8,000 participants) finds collagen supplements offer modest but real benefits: improvements in muscle health and osteoarthritis pain, plus better skin hydration and elasticity with consistent, longer-term use. However, results vary by product type, dose, and study quality, and many trials are short or poorly designed, leaving long-term effects and who benefits most still unclear; more standardized research is needed.

via ScienceAlert|
#collagen#health#joints
Collagen Supplements Offer Modest Skin and Joint Benefits, but Evidence Remains Inconsistent
health17 days ago

Collagen Supplements Offer Modest Skin and Joint Benefits, but Evidence Remains Inconsistent

A large review of 113 clinical trials (up to March 2025, about 8,000 participants) finds collagen supplements are associated with modest improvements in muscle health, reduced osteoarthritis pain, and improved skin hydration and elasticity with longer use, but results vary by product type and study quality is often low, meaning long-term effects and which people benefit most remain uncertain.

via The Conversation|
#collagen#health#joints
Isometric workouts: a 14-minute, thrice-weekly route to lower blood pressure
health22 days ago

Isometric workouts: a 14-minute, thrice-weekly route to lower blood pressure

A recent meta-analysis of isometric exercises (handgrip, wall squat, leg extension) suggests that doing four 2‑minute bouts, three days a week for a total of 14 minutes per session can lower blood pressure and improve heart function—often more effectively than cardio or resistance training. The routine is accessible at home without equipment and may help those with joint or mobility issues, though long‑term effects and interactions with blood pressure medications need more study; ongoing large trials aim to refine the optimal protocols.

via BBC|
#blood-pressure#cardiovascular-health#health
Most Sleep Aids Safe for Obstructive Sleep Apnea, Temazepam Notable Risk
health27 days ago

Most Sleep Aids Safe for Obstructive Sleep Apnea, Temazepam Notable Risk

A Japanese-led network meta-analysis of 32 randomized trials across 12 hypnotics in adults with COMISA found that most sleep medications do not significantly worsen respiratory outcomes or oxygen levels compared with placebo; temazepam stood out as potentially lowering nocturnal oxygen saturation. The study supports symptom-driven drug choices and notes CPAP remains the gold standard, with meds offering a viable plan B for those who struggle with CPAP tolerance.

via Neuroscience News|
#comisa#health#hypnotics
Autism study finds females show larger cognitive shifts than males
autism28 days ago

Autism study finds females show larger cognitive shifts than males

A large meta-analysis of 34 studies (over 1.2 million participants) finds autistic females exhibit larger departures from the typical female cognitive profile than autistic males do from the typical male profile, supporting a female protective effect and a stronger application of the Extreme Male Brain theory to females; empathy shifts drive the signal more than systemizing, with a notable cognitive trade-off in autism. Limitations include reliance on self-reports and sample clustering, underscoring the need for further research to improve identification of autistic females.

via PsyPost|
#autism#empathizing#femaleprotectiveeffect
Fasting Generally Doesn’t Impair Adults’ Thinking, Large Review Finds
science1 month ago

Fasting Generally Doesn’t Impair Adults’ Thinking, Large Review Finds

A sweeping meta-analysis of 63 studies (3,484 participants) finds no meaningful difference in cognitive performance between fasted and fed healthy adults. Age matters (children fare worse when fasting); longer fasts may lessen performance gaps as ketones supply energy; testing later in the day and the presence of food cues can influence results; and the type of cognitive task matters. Overall, fasting appears compatible with maintained mental sharpness in adults, with caveats for kids and certain contexts, while metabolic benefits like autophagy and improved insulin sensitivity are noted but vary by individual.

via ScienceAlert|
#autophagy#cognitive-performance#fasting
Omega-3 Supplements Linked to Lower Aggression in Large Review
science2 months ago

Omega-3 Supplements Linked to Lower Aggression in Large Review

A 2024 meta-analysis of 29 randomized controlled trials (3,918 participants) found that omega-3 supplementation (fish oil) can reduce aggression by up to 28% in the short term across diverse ages and settings, with trials averaging 16 weeks and showing reductions in both reactive and proactive aggression; longer-term studies are needed to confirm and extend these findings.

via ScienceAlert|
#aggression#meta-analysis#nutrition
Big statin side-effect list largely not caused by the drugs, study finds
health2 months ago

Big statin side-effect list largely not caused by the drugs, study finds

A Lancet meta-analysis of 19 randomized trials involving about 124,000 participants over roughly 4.5 years finds that 62 of the 66 side-effects listed for statins have no solid evidence of being caused by the drugs; only four (liver test changes, minor liver abnormalities, urine changes, tissue swelling) have evidence supporting them. Overall, the risk of side-effects is very small and the cardiovascular benefits of statins—reducing heart attacks, strokes and cardiovascular deaths—greatly outweigh harms, prompting calls to update labeling to better reflect the evidence and reassure patients and doctors.

via The Guardian|
#cardiovascular#health#lancet
Vitamin D and Omega-3 Might Outperform Antidepressants in Depression Research
health2 months ago

Vitamin D and Omega-3 Might Outperform Antidepressants in Depression Research

Meta-analyses cited by a researcher suggest vitamin D and omega-3 supplements may reduce depressive symptoms more than common antidepressants: amitriptyline shows an effect size of about 0.417 vs placebo, omega-3 around 0.558 (1500 mg/day with at least 60% EPA), and vitamin D about 1.82 (5000 IU/day). These findings come from Cipriani 2018 (antidepressants), Sublette 2011+ (omega-3), and Ghaemi 2024 (vitamin D), but all estimates carry large uncertainty and official doses are blamed as “too low.” While supplements are cheap and generally safe, some caveats apply (kidney stones or blood thinners require medical advice). More research is needed, but the article argues trying these might be reasonable for some people under supervision.

via boingboing.net|
#antidepressants#depression#health