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1. Trainingwell supported · human dataAdded 8 August 2026

   For older lifters, moving fast may beat moving slow when everyday function is the goal

   Power training, lifting with fast, high-velocity movement, showed a small advantage over conventional slow-velocity resistance training for functional outcomes in over-60s, in a meta-analysis of 11 trials with 377 participants (pooled effect size 0.32).

   ⚠What it shows: Meta-analysis of 11 small trials (377 community-dwelling people over 60); the pooled advantage was small, several confidence intervals crossed zero, and no firm conclusion could be made on safety.Meta-analysis · Age Ageing

   Full breakdown →Sarcopenia explained →Is power training or conventional resistance training better for function in elderly persons? A meta-analysis. Age Ageing 2011
2. Longevitywell supported · human dataAdded 8 August 2026

   The longevity basics hold up across 35 trials

   A systematic review and meta-analysis of 35 randomised trials in adults aged 50 and over links combined lifestyle measures, Mediterranean-style diet, aerobic and resistance exercise, cognitive engagement, social support, sleep and preventive care, with better ageing outcomes, including a 25% lower risk of cognitive decline with 7-8 hours of sleep.

   ⚠What it shows: Review of 35 RCTs (~25,000 participants aged 50+), but it pools very different interventions and outcomes into single estimates, and some reported associations (notably on alcohol and sleep) read as observational and are loosely described in the abstract.Meta-analysis · Invest Educ Enferm

   Full breakdown →Healthspan explained →Healthy Lifestyle & Life Expectancy →Evidence-Based Pathways to Healthy Aging: A Systematic Review and Meta-analysis of Lifestyle Interventions for Longevity and Well-Being. Invest Educ Enferm 2025
3. Metabolic & GLP-1well supported · human dataAdded 8 August 2026

   One workout keeps your fat burning into tomorrow

   A single endurance workout keeps resting fat oxidation elevated on the day of exercise and into the following day, a meta-analysis finds. Total energy expended in the session and the exerciser's aerobic fitness, not exercise intensity, predicted the size of the effect.

   ⚠What it shows: Meta-analysis pooling varied exercise-study protocols; the abstract does not detail individual sample sizes; the sex difference appeared only in the fasted (postabsorptive) state; measures fat oxidation, not fat loss.Meta-analysis · J Appl Physiol (1985)

   Full breakdown →VO2max Calculator →Determinants of resting lipid oxidation in response to a prior bout of endurance exercise. J Appl Physiol (1985) 2014
4. Nutritionwell supported · human dataAdded 8 August 2026

   Steeper calorie cuts cost more muscle: exercise protects it

   In a systematic review of weight loss exceeding 10 kg, harsher caloric restriction was associated with a larger share of the lost weight coming from fat-free mass, while adding exercise reduced the proportion of lean tissue lost.

   ⚠What it shows: Systematic review pooling 26 diet/behavioural cohorts and 29 bariatric-surgery cohorts, mostly observational; the exercise finding rests on just three RCTs; applies to large weight losses of more than 10 kg.Systematic review · Int J Obes (Lond)

   Full breakdown →Calorie Deficit Calculator →Changes in fat-free mass during significant weight loss: a systematic review. Int J Obes (Lond) 2007
5. Supplementswell supported · human dataAdded 8 August 2026

   Creatine does nothing for endurance in trained athletes

   Creatine monohydrate did not improve endurance performance in trained people across 13 placebo-controlled trials, with a trivial, non-significant pooled effect of -0.07.

   ⚠What it shows: Meta-analysis of 13 placebo-controlled trials in trained populations only; endurance tests varied between studies; the finding does not contradict creatine's established benefit for short, high-intensity exercise.Meta-analysis · Sports Med

   Full breakdown →Creatine monohydrate guide →Creatine Calculator →Effects of Creatine Monohydrate on Endurance Performance in a Trained Population: A Systematic Review and Meta-analysis. Sports Med 2023
6. Environmentwell supported · human dataAdded 8 August 2026

   Cold waves carry a 40% higher death risk for people with diabetes

   Pooled data from eight studies link cold-wave exposure to a 40% increase in diabetes-related mortality risk (relative risk 1.40); the rise in diabetes-related illness was smaller and not statistically significant.

   ⚠What it shows: Meta-analysis of eight observational studies; the morbidity estimate was not statistically significant (its confidence interval crossed 1) and risk varied across studies, suggesting environmental and healthcare disparities between settings.Meta-analysis · Front Public Health

   Full breakdown →Impact of cold waves on diabetes-related morbidity and mortality: a meta-analysis. Front Public Health 2025
7. Trainingpreliminary · human dataAdded 8 August 2026

   Strength training helps sarcopenic obesity even when body composition won't budge

   In older adults with sarcopenic obesity, high-speed circuit resistance training significantly improved muscle strength and physical function, even though neither exercise nor an extra 15 g of daily protein changed body composition.

   ⚠What it shows: Systematic review that found only two eligible trials (61 participants in total, mean age ≥65); the evidence base is very thin and body composition did not change significantly in either study.Systematic review · Nutr Res

   Full breakdown →Sarcopenia explained →Body Fat Calculator →Effectiveness of nutritional and exercise interventions to improve body composition and muscle strength or function in sarcopenic obese older adults: A systematic review. Nutr Res 2017
8. Supplementspreliminary · human dataAdded 8 August 2026

   Sesame may boost athletes' antioxidant defences: exercise does the rest

   In semiprofessional athletes doing aerobic training, four small trials suggest sesame supplementation boosted antioxidant defences and lowered the oxidative-stress marker malondialdehyde; reductions in inflammatory cytokines appeared to come mainly from the exercise itself.

   ⚠What it shows: Systematic review of just four RCTs (140 semiprofessional athletes, 4-10 weeks); outcomes were blood biomarkers only, with no direct performance or recovery measures, so replication and functional endpoints are needed.Systematic review · Nutr Health

   Full breakdown →Recovery Readiness Index →The emerging role of sesame supplementation with aerobic exercise in athlete recovery and immunomodulation: A systematic review of human trials. Nutr Health 2026
9. Supplementswell supported · human dataAdded 8 August 2026

   Tart cherry trims one inflammation marker, and leaves the others alone

   Outside of exercise settings, tart cherry lowered the inflammation marker C-reactive protein by an average of 0.55 mg/L across ten randomised trials, but had no significant effect on IL-6 or TNF-α.

   ⚠What it shows: Meta-analysis of 10 non-exercise RCTs; the CRP reduction was modest, IL-6 showed no significant change, and TNF-α was assessed in only three studies, also with no significant effect.Meta-analysis · Complement Ther Med

   Full breakdown →The beneficial effect of tart cherry on plasma levels of inflammatory mediators (not recovery after exercise): A systematic review and meta-analysis on randomized clinical trials. Complement Ther Med 2022
10. Supplementswell supported · human dataAdded 8 August 2026

    Curcumin plus black-pepper extract shifts blood fats: except LDL

    Across 16 randomised trials in 1038 adults, curcuminoids taken with piperine significantly lowered triglycerides and total cholesterol and modestly raised HDL cholesterol; LDL cholesterol did not fall significantly.

    ⚠What it shows: Meta-analysis of 16 RCTs (1038 adults); effects were modest, the LDL-C change was non-significant, and benefits were most pronounced with longer supplementation and in people with dyslipidaemia, metabolic disorders or overweight.Meta-analysis · Lipids

    Full breakdown →Heart Age Calculator →Effects of Curcuminoids Plus Piperine Co-Supplementation on Serum Lipid Profile in Adults: A Systematic Review and Meta-Analysis of RCTs. Lipids 2026
11. Supplementswell supported · human dataAdded 8 August 2026

    Supplement users were 2.74 times more likely to report doping

    Across 26 cross-sectional studies of 13,296 athletes, doping was 2.74 times more prevalent among dietary supplement users (14.7%) than non-users (6.7%), and supplement users also reported stronger doping intentions and attitudes.

    ⚠What it shows: All 26 included studies were cross-sectional, so the link is an association and cannot show supplement use causes doping; doping was self-reported and measurement of supplement use was inconsistent across studies.Meta-analysis · Int J Drug Policy

    Full breakdown →Are dietary supplement users more likely to dope than non-users?: A systematic review and meta-analysis. Int J Drug Policy 2023
12. Bones & Jointswell supported · human dataAdded 8 August 2026

    For chronic back pain, only movement held up long term

    A systematic review of 85 studies on chronic non-specific low back pain found that only movement therapy showed evidence of long-term effectiveness. Bed rest, TENS, massage, spine supports, back schools and antidepressants showed no evident effectiveness, while injections, NSAIDs, heat and opioids helped only in the short term.

    ⚠What it shows: Review of German and English literature from 2004 to 2015; therapies were assessed as broad categories, 'long term' meant beyond 6 weeks, and the evidence base is now around a decade old.Meta-analysis · Orthopade

    Full breakdown →[Conservative treatment of nonspecific, chronic low back pain : Evidence of the efficacy - a systematic literature review]. Orthopade 2016
13. Supplementswell supported · human dataAdded 8 August 2026

    Black seed supplements cooled inflammation markers in metabolic syndrome

    A meta-analysis of 16 randomised controlled trials in 1033 people with metabolic syndrome and related disorders found that Nigella sativa (black seed) supplementation significantly reduced inflammatory markers, CRP, TNF-α and IL-6, and improved oxidative stress markers versus placebo.

    ⚠What it shows: Meta-analysis of 16 RCTs (n=1033) in patients with metabolic syndrome and related disorders; outcomes are blood biomarkers, not disease events, and the authors themselves conclude only that intake 'could be associated' with improvement.Meta-analysis · Curr Pharm Biotechnol

    Full breakdown →Metabolic syndrome explained →Effect of Nigella sativa Intake on Oxidative Stress and Inflammation in Patients with Metabolic Syndrome and Related Disorders: A Systematic Review and Meta-analysis of Randomized Controlled Trials. Curr Pharm Biotechnol 2024
14. Sleeppreliminary · human dataAdded 8 August 2026

    Clearing the sinuses tracked with quieter, steadier breathing at night

    Across 15 studies, treating rhinosinusitis medically or surgically was frequently followed by reductions in the apnoea-hypopnoea index and improvements in endoscopic findings, sleep quality and daytime sleepiness, although subjective nasal symptom outcomes varied between studies.

    ⚠What it shows: Systematic review of 15 mostly before-and-after studies with treatments ranging from sinus surgery to biologics; heterogeneity was too great for any pooled estimate, so no effect size exists and uncontrolled designs cannot establish cause.Systematic review · Medicina (Kaunas)

    Full breakdown →The Impact of Rhinosinusitis and Its Treatment on Sleep-Disordered Breathing: A Systematic Review. Medicina (Kaunas) 2026
15. Longevitywell supported · human dataAdded 8 August 2026

    Walking-based rehab gets older adults moving again after illness

    In a meta-analysis of 29 randomised trials with 7,076 older adults, community rehabilitation built around outdoor walking plus behaviour-change support increased physical activity, endurance and outdoor mobility in those recovering from illness or injury, with effects preserved at follow-up where reported. Falls-related self-efficacy did not improve.

    ⚠What it shows: Meta-analysis of 29 RCTs (7,076 participants), but 66% of trials were at high risk of bias in at least one domain; the clearest effects came from small subsets of trials (two to seven per outcome) and applied to older adults recovering from illness or injury, not to already-well community-dwellers.Meta-analysis · Age Ageing

    Full breakdown →Healthspan explained →The effectiveness of rehabilitation interventions including outdoor mobility on older adults' physical activity, endurance, outdoor mobility and falls-related self-efficacy: systematic review and meta-analysis. Age Ageing 2022
16. Supplementspreliminary · human dataAdded 8 August 2026

    Early review found protein supplement evidence too thin to recommend

    A systematic review of nine randomised trials in healthy people found lean-mass gains of 0.8 to 1.9 kg with protein supplementation during resistance training, but the longest trial lasted only 12 weeks. The authors concluded the evidence did not support recommending protein supplements for healthy individuals.

    ⚠What it shows: Systematic review of only nine RCTs in healthy subjects, searched up to April 2009; only three studies reached level 3 evidence and the longest intervention was 12 weeks, so the conclusion reflects a thin, dated trial base rather than a definitive verdict.Systematic review · Arch Latinoam Nutr

    Full breakdown →Whey protein guide →Protein Intake Calculator →[Effectivity in the use of protein supplements in resistance training: systematic review]. Arch Latinoam Nutr 2010
17. Mindpreliminary · human dataAdded 8 August 2026

    Slow breathing cut chronic pain by up to 37% in the strongest trials

    In a systematic review of ten randomised trials in adults with chronic pain conditions such as neck pain, low back pain, fibromyalgia and tension-type headache, the two trials judged at low risk of bias, both testing 15 minutes of daily slow diaphragmatic breathing, showed clinically relevant pain reductions of up to 37%. The reviewers stress that the overall evidence remains sparse.

    ⚠What it shows: Systematic review of 10 RCTs (638 participants total) with trial quality ranging from high to critically low; heterogeneity prevented pooling of results, and the strongest finding rests on just two low-bias trials: the authors themselves call the evidence sparse.Systematic review · Scand J Pain

    Full breakdown →Breathwork for Recovery and Stress →Breathing therapy as a supplement to opioid management for complex chronic non-cancer pain conditions - a systematic review. Scand J Pain 2026
18. Longevitypreliminary · human dataAdded 8 August 2026

    Exercise did not lengthen telomeres in women overall

    Across 17 studies of women, physical activity overall showed no significant relationship with telomere length, a marker of cellular ageing. A possible positive relationship appeared only for combined aerobic-plus-strength programmes and high-intensity interval training, and only in early and later adulthood rather than middle adulthood.

    ⚠What it shows: Systematic review with narrative synthesis of 17 studies (2008-2022) in women; most observational and reliant on self-reported activity, with wide variation in exercise type, intensity, duration and frequency, so no firm conclusions could be drawn and race or ethnicity analyses were inconclusive.Systematic review · Mech Ageing Dev

    Full breakdown →Biological age explained →Phenotypic Age Calculator →The relationship between physical activity and telomere length in women: A systematic review. Mech Ageing Dev 2025
19. Metabolic & GLP-1well supported · human dataAdded 8 August 2026

    Exercise cut fasting insulin across 58 trials in women

    Pooling 58 randomised trials in adult women, exercise interventions reduced fasting insulin, insulin resistance (HOMA-IR) and fasting glucose compared with control. IGF-1 rose, with no clear effect on IGFBP-3 or the IGF-1:IGFBP-3 ratio, and the evidence was graded strong only for fasting insulin and insulin resistance.

    ⚠What it shows: Systematic review and meta-analysis of 58 randomised controlled trials in adult women; no observational or Mendelian randomisation studies qualified, evidence certainty was strong for only two of the outcomes, and effects on C-peptide and HbA1c remain unexamined.Systematic review · Cancer Epidemiol Biomarkers Prev

    Full breakdown →Insulin sensitivity explained →Metabolic Fitness Index →Linking Physical Activity to Breast Cancer Risk via Insulin/Insulin-Like Growth Factor Signaling System, Part 1: The Effect of Physical Activity on the Insulin/Insulin-Like Growth Factor Signaling System. Cancer Epidemiol Biomarkers Prev 2022
20. Bones & Jointspreliminary · human dataAdded 8 August 2026

    Cognitive functional therapy may not beat manual therapy for back pain

    Pooling five randomised trials (n = 507), cognitive functional therapy may be no more effective than manual therapy plus core exercises for reducing pain and disability in chronic low back pain, with the pooled estimates so imprecise that the certainty of evidence was rated very low. No adverse events were reported.

    ⚠What it shows: Systematic review and meta-analysis of 15 identified trials, of which only 5 provided data (n = 507; 262 cognitive functional therapy, 245 control); all studies were judged at high risk of bias, confidence intervals were extremely wide, and 9 trials were still ongoing.Meta-analysis · J Orthop Sports Phys Ther

    Full breakdown →Effectiveness of Cognitive Functional Therapy for Reducing Pain and Disability in Chronic Low Back Pain: A Systematic Review and Meta-analysis. J Orthop Sports Phys Ther 2023
21. Metabolic & GLP-1well supported · human dataAdded 8 August 2026

    GLP-1 in a pill: big weight loss, familiar gut toll

    A meta-analysis of ten randomised trials found oral small-molecule GLP-1 receptor agonists significantly reduced body weight, waist circumference and HbA1c in adults with type 2 diabetes or obesity, and made a weight loss of 15% or more 10.61 times more likely. Gastrointestinal side effects rose sharply, but serious adverse events did not increase.

    ⚠What it shows: Meta-analysis of ten RCTs in adults with type 2 diabetes or obesity; the abstract does not report total participant numbers or trial durations, and gastrointestinal side effects were substantially more common on the drugs.Meta-analysis · Front Endocrinol (Lausanne)

    Full breakdown →Insulin sensitivity explained →Calorie Deficit Calculator →Investigation into the efficacy and safety profile of oral small-molecule GLP-1 receptor agonists in type 2 diabetes and obesity: a systematic review and meta-analysis. Front Endocrinol (Lausanne) 2026
22. Metabolic & GLP-1well supported · human dataAdded 8 August 2026

    Tirzepatide improves how physically capable people feel

    A meta-analysis of six randomised trials in 4531 adults with overweight or obesity found once-weekly tirzepatide (10 or 15 mg) improved patient-reported physical function versus placebo, by 2.26 points on the SF-36 physical function domain and 10.10 points on the IWQOL-Lite-CT physical function subscale, though between-study heterogeneity was extreme.

    ⚠What it shows: Meta-analysis of six RCTs (4531 participants, 2802 on tirzepatide); outcomes were self-reported questionnaires, heterogeneity was extreme (I2 = 99.8%) and GRADE certainty only moderate due to risk of bias and inconsistency.Meta-analysis · Diabetes Obes Metab

    Full breakdown →Healthspan explained →Tirzepatide on physical function in adults with overweight or obesity: A systematic review and meta-analysis. Diabetes Obes Metab 2026
23. Metabolic & GLP-1well supported · human dataAdded 8 August 2026

    Weight loss on tirzepatide roughly doubles without diabetes

    In a meta-analysis of ten randomised trials, once-weekly tirzepatide reduced body weight by an average of 18.11 kg versus placebo in adults without diabetes, but by 9.06 kg in adults with diabetes, with mostly mild-to-moderate side effects in both groups.

    ⚠What it shows: Meta-analysis of placebo-controlled RCTs of at least 26 weeks: five trials (n=2,174) in adults with diabetes and five (n=4,467) without. The abstract does not explain why the effect differs by diabetes status.Meta-analysis · Int J Obes (Lond)

    Full breakdown →Energy balance explained →Calorie Deficit Calculator →Effects of tirzepatide on weight management in patients with and without diabetes: a systematic review and meta-analysis. Int J Obes (Lond) 2025
24. Metabolic & GLP-1well supported · human dataAdded 8 August 2026

    Semaglutide cuts heart-rhythm and cardiovascular risks in type 2 diabetes

    A meta-analysis of 30 randomised trials in 32490 people with type 2 diabetes found semaglutide reduced atrial fibrillation, complete heart block, death from cardiovascular causes and revascularisation compared with controls, with longer treatment showing greater benefits for heart-rhythm outcomes.

    ⚠What it shows: Meta-analysis of 30 RCTs in people with type 2 diabetes only; confidence intervals for atrial fibrillation and cardiovascular death approach the line of no effect, and the findings may not extend to people without diabetes.Meta-analysis · Front Endocrinol (Lausanne)

    Full breakdown →Heart Age Calculator →Effect of semaglutide on arrhythmic, major cardiovascular, and microvascular outcomes in patients with type 2 diabetes: a systematic review and meta-analysis. Front Endocrinol (Lausanne) 2025

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