[ { "slug": "saunas-lower-blood-pressure", "question": "Do saunas lower blood pressure?", "claim": "Regular sauna use lowers blood pressure.", "intervention": "Sauna and passive heat", "outcome": "Blood pressure", "topic": "sauna-heat-therapy", "status": "Supported in some settings", "status_tone": "supported", "answer": "Human studies suggest that sauna and other passive-heat protocols can reduce blood pressure in some populations, especially over short follow-up periods. The result is not universal, and effects vary by heat modality, dose, health status and study design. This is not evidence that sauna replaces prescribed hypertension care.", "fidelity": "Moderate", "fidelity_note": "The claim is reasonably direct when it refers to the heat protocol actually tested. Results from Finnish sauna, hot-water immersion and Waon therapy should not be treated as interchangeable.", "profile": {"Human evidence":"Substantial","Randomized evidence":"Moderate","Consistency":"Mostly consistent","Replication":"Multiple groups","Directness":"Moderate","Long-term outcomes":"Limited"}, "uncertainty": "Few large, long-duration randomized trials measure clinical cardiovascular outcomes.", "match_any": ["blood pressure", "hypertension", "hypertensive"], "trial_any": ["blood pressure", "hypertension", "hypertensive"] }, { "slug": "saunas-increase-longevity", "question": "Do saunas increase longevity?", "claim": "Frequent sauna bathing makes people live longer.", "intervention": "Sauna bathing", "outcome": "Longevity and mortality", "topic": "sauna-heat-therapy", "status": "Association, not proof", "status_tone": "mixed", "answer": "Frequent sauna bathing has been associated with lower cardiovascular and all-cause mortality in observational research, but that does not prove sauna itself extends life. People who use saunas frequently may differ in health, income, activity and other ways. Randomized trials have not established a longevity benefit.", "fidelity": "Moderate", "fidelity_note": "The best-known mortality evidence concerns Finnish sauna bathing. It cannot automatically support claims about infrared saunas, occasional use or different temperatures and session lengths.", "profile": {"Human evidence":"Moderate","Randomized evidence":"Absent for mortality","Consistency":"Suggestive","Replication":"Limited","Directness":"Low","Long-term outcomes":"Observational"}, "uncertainty": "No randomized trial could practically establish whether sauna use changes lifespan over decades.", "match_any": ["mortality", "longevity", "fatal", "death", "life expectancy"], "trial_any": ["mortality", "cardiovascular event", "survival"] }, { "slug": "infrared-saunas-lower-blood-pressure", "question": "Do infrared saunas lower blood pressure?", "claim": "Infrared sauna use lowers blood pressure.", "intervention": "Infrared sauna", "outcome": "Blood pressure", "topic": "infrared-sauna", "status": "Limited direct evidence", "status_tone": "limited", "answer": "Small human studies of infrared sauna or Waon therapy report blood-pressure and vascular changes in selected populations, but the direct evidence remains limited. Results from traditional Finnish sauna or hot-water immersion do not automatically establish that infrared sauna has the same effect.", "fidelity": "Moderate", "fidelity_note": "Only records explicitly indexed to infrared sauna or Waon therapy are counted here; conventional sauna and general passive-heating studies are excluded from the receipt.", "profile": {"Human evidence":"Limited","Randomized evidence":"Limited","Consistency":"Uncertain","Replication":"Limited","Directness":"Moderate","Long-term outcomes":"Very limited"}, "uncertainty": "Larger independent trials using standardized infrared protocols are needed.", "match_any": ["blood pressure", "hypertension", "vascular", "endothelial"], "trial_any": ["blood pressure", "hypertension", "vascular"] }, { "slug": "infrared-saunas-detoxify-the-body", "question": "Do infrared saunas detoxify the body?", "claim": "Infrared saunas remove harmful toxins from the body.", "intervention": "Infrared sauna", "outcome": "Toxin elimination", "topic": "infrared-sauna", "status": "Not established", "status_tone": "unsupported", "answer": "Sweating can contain trace substances, but the current indexed human literature does not establish that infrared sauna produces a clinically meaningful reduction in body burden or improves health by ‘detoxifying’ the body. Evidence about sweat composition is not equivalent to evidence of toxin removal or better clinical outcomes.", "fidelity": "Low", "fidelity_note": "Marketing language often converts detection of a substance in sweat into a claim of meaningful detoxification. Those are different outcomes and require different evidence.", "profile": {"Human evidence":"Sparse","Randomized evidence":"Not identified","Consistency":"Unknown","Replication":"Not established","Directness":"Low","Long-term outcomes":"Not established"}, "uncertainty": "A valid test would need prespecified toxins, measured body burden, a comparator and clinically meaningful outcomes.", "match_any": ["detox", "toxin", "toxic", "sweat", "heavy metal", "body burden"], "trial_any": ["detox", "toxin", "heavy metal", "body burden"] }, { "slug": "cold-water-immersion-reduces-muscle-soreness", "question": "Does cold-water immersion reduce muscle soreness?", "claim": "Cold-water immersion reduces soreness after strenuous exercise.", "intervention": "Cold-water immersion", "outcome": "Post-exercise muscle soreness", "topic": "cold-water-immersion", "status": "Supported for perceived soreness", "status_tone": "supported", "answer": "Cold-water immersion has comparatively substantial human research support for reducing perceived muscle soreness after strenuous exercise. Effects on strength recovery, performance and long-term training adaptation are less consistent and depend on temperature, timing, duration and the type of exercise performed.", "fidelity": "High", "fidelity_note": "The claim closely matches studies that directly measure perceived soreness after exercise. It should not be broadened into a claim that cold immersion improves every dimension of recovery.", "profile": {"Human evidence":"Substantial","Randomized evidence":"Substantial","Consistency":"Mostly consistent for soreness","Replication":"Multiple groups","Directness":"High","Long-term outcomes":"Limited"}, "uncertainty": "Short-term relief and long-term training adaptation are different questions.", "match_any": ["soreness", "muscle damage", "recovery", "delayed onset", "doms"], "trial_any": ["soreness", "recovery", "muscle damage", "exercise"] }, { "slug": "cold-plunges-increase-testosterone", "question": "Do cold plunges increase testosterone?", "claim": "Cold plunges meaningfully increase testosterone.", "intervention": "Cold-water immersion", "outcome": "Testosterone", "topic": "cold-water-immersion", "status": "Insufficient direct evidence", "status_tone": "unsupported", "answer": "The current indexed human evidence does not establish that cold plunges produce a meaningful or durable increase in testosterone. Short-lived hormonal responses to stress or exercise are not the same as a sustained increase, and research on post-exercise cold exposure may answer a different question from routine recreational plunging.", "fidelity": "Low", "fidelity_note": "Claims commonly generalize from acute physiological responses, animal research or combined exercise-and-cold protocols to ordinary cold-plunge use.", "profile": {"Human evidence":"Sparse","Randomized evidence":"Sparse","Consistency":"Unclear","Replication":"Not established","Directness":"Low","Long-term outcomes":"Not established"}, "uncertainty": "Durable hormonal effects would require repeated measurements and an appropriate control group.", "match_any": ["testosterone", "androgen", "hormone", "endocrine"], "trial_any": ["testosterone", "androgen", "hormone"] }, { "slug": "red-light-therapy-helps-knee-pain", "question": "Does red-light therapy help knee pain?", "claim": "Photobiomodulation reduces knee pain.", "intervention": "Photobiomodulation / red light", "outcome": "Knee pain", "topic": "photobiomodulation", "status": "Promising but protocol-dependent", "status_tone": "mixed", "answer": "Some randomized trials and reviews report pain or function improvements from photobiomodulation in knee conditions, particularly osteoarthritis, while other results are less certain. Wavelength, dose, treatment site, session schedule and comparator vary substantially, so the findings do not validate every consumer red-light device or protocol.", "fidelity": "Moderate", "fidelity_note": "Evidence can be direct for knee osteoarthritis protocols, but consumer claims often omit the studied wavelength, energy dose and treatment schedule.", "profile": {"Human evidence":"Moderate","Randomized evidence":"Moderate","Consistency":"Mixed","Replication":"Multiple groups","Directness":"Moderate","Long-term outcomes":"Limited"}, "uncertainty": "Device parameters and co-interventions make broad generalization difficult.", "match_any": ["knee", "osteoarthritis", "gonarthrosis"], "trial_any": ["knee", "osteoarthritis", "gonarthrosis"] }, { "slug": "red-light-therapy-reduces-pain", "question": "Does red-light therapy reduce pain?", "claim": "Photobiomodulation reduces pain.", "intervention": "Photobiomodulation / low-level light", "outcome": "Pain", "topic": "photobiomodulation", "status": "Promising but highly protocol-dependent", "status_tone": "mixed", "answer": "Photobiomodulation has been tested for pain across several conditions, with some trials and reviews reporting benefit. Results vary by diagnosis, wavelength, energy dose, treatment site, schedule and comparator. A positive result for one condition and protocol does not establish that any red-light device relieves pain generally.", "fidelity": "Moderate", "fidelity_note": "Pain is not one outcome or condition. Evidence for postoperative oral pain, knee osteoarthritis or neuropathic pain should not be generalized to every pain complaint or home device.", "profile": {"Human evidence":"Substantial","Randomized evidence":"Moderate","Consistency":"Mixed","Replication":"Multiple groups","Directness":"Moderate","Long-term outcomes":"Limited"}, "uncertainty": "Dose reporting and condition-specific effects make broad conclusions unreliable.", "match_any": ["pain", "analges", "soreness"], "trial_any": ["pain", "analges", "soreness"] }, { "slug": "massage-helps-lower-back-pain", "question": "Does massage help lower-back pain?", "claim": "Massage therapy reduces lower-back pain.", "intervention": "Massage therapy", "outcome": "Lower-back pain", "topic": "massage-therapy", "status": "May help short-term symptoms", "status_tone": "mixed", "answer": "Massage may reduce pain and improve function for some people with nonspecific lower-back pain, particularly in the short term. Effects vary by technique, treatment schedule, comparator and whether massage is combined with exercise or usual care. Evidence does not establish one best protocol or a durable benefit for everyone.", "fidelity": "High", "fidelity_note": "The claim is direct when it concerns nonspecific lower-back pain and a studied massage protocol. It should not be generalized to all causes of back pain.", "profile": {"Human evidence":"Substantial","Randomized evidence":"Moderate","Consistency":"Mixed to favorable","Replication":"Multiple groups","Directness":"High","Long-term outcomes":"Limited"}, "uncertainty": "Back pain has many causes, and trials use different massage techniques and comparators.", "match_any": ["low back", "lower back", "lumbar", "back pain"], "trial_any": ["low back", "lower back", "lumbar", "back pain"] }, { "slug": "floatation-therapy-reduces-anxiety", "question": "Does floatation therapy reduce anxiety?", "claim": "Floatation-REST reduces anxiety.", "intervention": "Floatation-REST", "outcome": "Anxiety and stress", "topic": "floatation-therapy", "status": "Promising, still limited", "status_tone": "limited", "answer": "Small human studies suggest that floatation-REST can reduce short-term anxiety or stress symptoms for some participants, but the evidence base is still limited in size, replication and follow-up. Relaxation immediately after a session is not the same as a durable treatment effect for an anxiety disorder.", "fidelity": "Moderate", "fidelity_note": "Evidence is most direct for short-term self-reported anxiety or stress after floatation-REST, not for curing a diagnosed anxiety disorder.", "profile": {"Human evidence":"Limited","Randomized evidence":"Limited","Consistency":"Promising","Replication":"Limited","Directness":"Moderate","Long-term outcomes":"Very limited"}, "uncertainty": "Larger independent controlled trials with longer follow-up are needed.", "match_any": ["anxiety", "stress", "anxious", "relaxation"], "trial_any": ["anxiety", "stress", "anxious"] }, { "slug": "passive-heating-improves-sleep", "question": "Does passive heating improve sleep?", "claim": "A hot bath or sauna before bed improves sleep.", "intervention": "Passive heating", "outcome": "Sleep", "topic": "sleep-and-passive-heating", "status": "Promising, protocol-sensitive", "status_tone": "limited", "answer": "Passive heating before bedtime may improve sleep onset or subjective sleep quality in some studies, but timing and temperature matter. Evidence from warm baths, hot-water immersion and sauna should not be collapsed into a single protocol, and the small research base does not establish a universal effect.", "fidelity": "Moderate", "fidelity_note": "The broad claim combines interventions with different heating patterns. A result from warm bathing may not apply to sauna use.", "profile": {"Human evidence":"Limited","Randomized evidence":"Limited","Consistency":"Promising","Replication":"Limited","Directness":"Moderate","Long-term outcomes":"Very limited"}, "uncertainty": "The optimal modality, temperature, timing and frequency remain uncertain.", "match_any": ["sleep", "insomnia", "bedtime", "circadian"], "trial_any": ["sleep", "insomnia", "bedtime"] }, { "slug": "contrast-therapy-improves-recovery", "question": "Does contrast therapy improve exercise recovery?", "claim": "Alternating hot and cold water improves recovery after exercise.", "intervention": "Contrast water therapy", "outcome": "Exercise recovery", "topic": "contrast-therapy", "status": "Mixed and outcome-dependent", "status_tone": "mixed", "answer": "Contrast water therapy may improve perceived recovery or soreness after exercise, but results for strength, power and objective performance are inconsistent. Protocols vary widely in temperature, immersion depth, cycle length and total duration, which makes a single broad effectiveness claim unreliable.", "fidelity": "High", "fidelity_note": "The intervention and recovery outcome are usually direct, but subjective soreness should not be presented as proof of faster tissue repair or improved performance.", "profile": {"Human evidence":"Moderate","Randomized evidence":"Limited","Consistency":"Mixed","Replication":"Multiple groups","Directness":"High","Long-term outcomes":"Limited"}, "uncertainty": "Objective and perceived recovery often move differently.", "match_any": ["recovery", "soreness", "fatigue", "muscle damage", "performance"], "trial_any": ["recovery", "soreness", "fatigue", "exercise"] } ]