Evidence-based reviews of popular health claims. Powered by meta-analyses, not marketing.
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Claims Reviewed
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Meta-Analyses
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RCTs Cited
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Updated
Moderate evidence suggests creatine may improve short-term memory and reasoning ability, particularl...
Weak evidence suggests cold exposure activates brown fat and temporarily increases metabolic rate, b...
Moderate evidence supports that regular moderate-intensity cardio (Zone 2, where you can still hold ...
Moderate evidence suggests ashwagandha may modestly increase testosterone levels in men, particularl...
Moderate evidence suggests intermittent fasting improves some biomarkers associated with longevity (...
Moderate evidence suggests magnesium supplementation may improve sleep quality, particularly in olde...
Moderate-to-good evidence supports vitamin D's role in immune modulation, particularly in reducing r...
Moderate evidence from meta-analyses supports berberine supplementation reducing fasting blood gluco...
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Moderate evidence suggests 5-HTP may improve depressive symptoms by increasing serotonin synthesis, with some RCTs showing efficacy comparable to SSRIs. However, most studies are older, small, and methodologically limited, and safety concerns exist regarding long-term use.
Despite viral social media claims, randomized trials consistently show that linoleic acid from seed oils does not increase inflammatory markers at normal dietary intakes. The claim is not supported by clinical evidence.
Conflicting evidence: Most regulatory agencies consider artificial sweeteners safe at approved doses, but emerging research raises concerns about gut microbiome disruption, metabolic effects, and appetite dysregulation. The evidence is actively evolving.
Very weak evidence supports activated charcoal for general body detoxification. While medically effective for acute poisoning within 1-2 hours of ingestion, no credible evidence supports routine charcoal supplementation for removing everyday toxins, heavy metals, or metabolic waste. The detox marketing claims lack biological plausibility for systemic toxin removal.
Moderate evidence supports acupuncture for chronic pain conditions, with effects modestly superior to sham acupuncture and substantially superior to no treatment. The small difference between real and sham acupuncture suggests non-specific effects (therapeutic ritual, expectation) contribute significantly to outcomes.
Overwhelming scientific evidence from millions of children confirms no link between vaccines and autism. The original 1998 Wakefield study was retracted for fraud. Multiple large-scale studies across different countries consistently demonstrate vaccine safety.
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