# Longevinsights

Longevinsights reviews the evidence behind longevity claims and runs a verified directory of longevity clinics. Reviews are written in plain language and checked against the cited papers; the directory carries no sponsored listings and no affiliate links. The library currently holds 54 evidence pages and lists 131 clinics across 89 cities.

## Main sections

- [Claim checks](https://www.longevinsights.com/claims)
- [Insights](https://www.longevinsights.com/insights)
- [Clinic directory](https://www.longevinsights.com/clinics)
- [Clinics by city](https://www.longevinsights.com/clinics/by-city)
- [Clinics by service](https://www.longevinsights.com/clinics/by-service)
- [Guides](https://www.longevinsights.com/guides)

## Evidence library

- [24-hour fasts may trigger autophagy, but proof is limited](https://www.longevinsights.com/insights/24-hour-fasts-may-trigger-autophagy-but-proof-is-limited): Fasting can switch on cellular recycling signals, but a one-day fast is not a guaranteed longevity shortcut.
- [A 16-hour fast has the strongest time-restricted eating signal](https://www.longevinsights.com/insights/a-16-hour-fast-has-the-strongest-tre-signal): Shorter eating windows may help body composition, but the evidence is stronger for weight and fat loss than for broad metabolic change.
- [Does plant protein build as much muscle as animal protein?](https://www.longevinsights.com/insights/animal-protein-usually-triggers-stronger-muscle-building): Across 30 randomised trials, plant protein built slightly less muscle than animal protein and just as much strength. Soy came out level...
- [Are biological age tests accurate? The number depends on the clock](https://www.longevinsights.com/insights/are-biological-age-tests-accurate-the-number-depends-on-the-clock): Biological age tests get your real age right. Whether the gap they sell you survives a second test depends on which clock the laboratory...
- [Are full-body MRI scans worth it? What the evidence shows](https://www.longevinsights.com/insights/are-full-body-mri-scans-worth-it-what-the-evidence-shows): Full-body MRI scans find something in a lot of people who get one. Whether they are worth it rests on evidence nobody has collected yet.
- [Can you build muscle with only plant protein?](https://www.longevinsights.com/insights/can-you-build-muscle-with-only-plant-protein): Trials that put lifters on entirely plant-based diets found no muscle deficit. You can build muscle with only plant protein, on two...
- [Cold exposure activates brown fat, but it is not a weight-loss shortcut](https://www.longevinsights.com/insights/cold-exposure-activates-brown-fat-but-it-is-not-a-weight-loss-shortcut): Human studies show brown fat responds to cold, but the gain in how the body burns and handles fuel looks modest and the protocols are not...
- [Creatine may help cognition most when the brain is under strain](https://www.longevinsights.com/insights/creatine-may-help-cognition-most-when-the-brain-is-under-strain): The clearest human signal is for short-term memory and reasoning, not a general brain boost for everyone.
- [Do PRP injections work for knee arthritis? Pain yes, cartilage no](https://www.longevinsights.com/insights/do-prp-injections-work-for-knee-arthritis-pain-yes-cartilage-no): PRP injections beat gel injections for knee arthritis pain over a year in pooled trials, but they do not regrow cartilage and guidelines do...
- [Does alcohol affect REM or deep sleep? Both, in opposite directions](https://www.longevinsights.com/insights/does-alcohol-affect-rem-or-deep-sleep-both-in-opposite-directions): Alcohol affects REM and deep sleep in opposite directions: REM drops from about two drinks, deep sleep rises early and falls later in the...
- [Does creatine cause hair loss? The only direct trial found no change](https://www.longevinsights.com/insights/does-creatine-cause-hair-loss-the-only-direct-trial-found-no-change): The only trial to test directly whether creatine causes hair loss measured hormones and hair in 38 men for 12 weeks and found no change.
- [Does NAD+ IV therapy work? The evidence is one heart failure trial](https://www.longevinsights.com/insights/does-nad-iv-therapy-work-the-evidence-is-one-heart-failure-trial): Clinics sell NAD+ IV therapy for energy and ageing. The one randomised trial of the infusion gave it to 180 people with heart failure, for...
- [Does red light therapy work for hair loss?](https://www.longevinsights.com/insights/does-red-light-therapy-work-for-hair-loss): Red light therapy grows measurably more hair than a dummy device in pattern hair loss, but the trials are small and rarely test the...
- [How much protein do older adults need? More than the RDA](https://www.longevinsights.com/insights/how-much-protein-do-older-adults-need-more-than-the-rda): How much protein older adults need is more than the RDA suggests: three expert panels reviewing the evidence land at 1.0 to 1.2 grams per...
- [Hyperbaric oxygen therapy side effects: how common are they?](https://www.longevinsights.com/insights/hyperbaric-oxygen-therapy-side-effects-how-common-are-they): The usual hyperbaric oxygen therapy side effects are ear pressure pain and temporary short-sightedness. Serious problems are rare. Here are...
- [Is a continuous glucose monitor without diabetes worth it?](https://www.longevinsights.com/insights/is-a-continuous-glucose-monitor-without-diabetes-worth-it): In pooled trials, wearing a continuous glucose monitor without diabetes helped people with prediabetes and did nothing measurable for...
- [What are the side effects of NAD+ IV therapy? The evidence is oral](https://www.longevinsights.com/insights/what-are-the-side-effects-of-nad-iv-therapy-the-evidence-is-oral): NAD+ IV therapy side effects have not been catalogued in a trial. Those on record, muscle pain, tiredness and headaches, come from 489...
- [What does a DEXA scan show, and is it worth the money?](https://www.longevinsights.com/insights/what-does-a-dexa-scan-show-and-is-it-worth-the-money): What a DEXA scan shows - bone density, body fat, lean mass, visceral fat - and which of those four numbers the evidence says is worth...
- [What is a good VO2 max for your age and sex?](https://www.longevinsights.com/insights/what-is-a-good-vo2-max-for-your-age-and-sex): Average VO2 max by age and sex from 3,992 treadmill tests, and why the average itself has been falling for twenty years.
- [10 squats every 45 minutes beat a 30-minute walk for blood sugar control](https://www.longevinsights.com/claim/10-squats-every-45-minutes-beat-30-min-walk-blood-sugar)
- [You need 10,000 steps a day for longevity](https://www.longevinsights.com/claim/10000-steps-a-day-for-longevity)
- [8 hours of sleep is optimal for longevity](https://www.longevinsights.com/claim/8-hours-sleep-optimal-for-longevity)
- [Beans proteins are not good as animal proteins](https://www.longevinsights.com/claim/beans-proteins-are-not-good-as-animal-proteins)
- [blue light blocking glasses reduce digital eye strain and protect the retina](https://www.longevinsights.com/claim/blue-light-blocking-glasses-reduce-digital-eye-strain-and-protect-the-retina)
- [Blue light from screens destroys your sleep](https://www.longevinsights.com/claim/blue-light-destroys-sleep)
- [Chronic stress accelerates biological aging](https://www.longevinsights.com/claim/chronic-stress-accelerates-biological-aging)
- [Coffee extends lifespan](https://www.longevinsights.com/claim/coffee-extends-lifespan)
- [Cold exposure boosts metabolism and longevity](https://www.longevinsights.com/claim/cold-exposure-boosts-metabolism-longevity)
- [cold showers are bad](https://www.longevinsights.com/claim/cold-showers-are-bad)
- [creatine improves muscle strength](https://www.longevinsights.com/claim/creatine-improves-muscle-strength)
- [Creatine is only for bodybuilders](https://www.longevinsights.com/claim/creatine-only-for-bodybuilders)
- [Does curcumin reduce inflammation](https://www.longevinsights.com/claim/does-curcumin-reduce-inflammation)
- [The fasting mimicking diet regenerates the immune system](https://www.longevinsights.com/claim/fasting-mimicking-diet-regenerates-immune-system)
- [Grounding (earthing) has proven health benefits](https://www.longevinsights.com/claim/grounding-earthing-proven-health-benefits)
- [Hyperbaric oxygen therapy reverses aging](https://www.longevinsights.com/claim/hyperbaric-oxygen-therapy-reverses-aging)
- [Intermittent fasting slows aging](https://www.longevinsights.com/claim/intermittent-fasting-slows-aging)
- [Magnesium supplementation improves sleep](https://www.longevinsights.com/claim/magnesium-supplementation-improves-sleep)
- [Meditation increases telomere length](https://www.longevinsights.com/claim/meditation-increases-telomere-length)
- [The Mediterranean diet extends lifespan](https://www.longevinsights.com/claim/mediterranean-diet-extends-lifespan)
- [Mouth taping improves sleep quality](https://www.longevinsights.com/claim/mouth-taping-improves-sleep)
- [NMN reverses aging](https://www.longevinsights.com/claim/nmn-reverses-aging)
- [Eating organic food increases lifespan](https://www.longevinsights.com/claim/organic-food-increases-lifespan)
- [Rapamycin is the most promising anti-aging drug](https://www.longevinsights.com/claim/rapamycin-most-promising-anti-aging-drug)
- [Red wine is good for your heart](https://www.longevinsights.com/claim/red-wine-good-for-heart)
- [Resveratrol extends lifespan](https://www.longevinsights.com/claim/resveratrol-extends-lifespan)
- [Running causes knee and hip arthritis](https://www.longevinsights.com/claim/running-causes-arthritis)
- [Regular sauna use extends lifespan](https://www.longevinsights.com/claim/sauna-use-extends-lifespan)
- [Seed oils are toxic](https://www.longevinsights.com/claim/seed-oils-are-toxic)
- [Social connections are the #1 predictor of longevity](https://www.longevinsights.com/claim/social-connections-number-1-predictor-longevity)
- [Sugar is the main driver of aging](https://www.longevinsights.com/claim/sugar-main-driver-of-aging)
- [Testosterone replacement therapy is anti-aging](https://www.longevinsights.com/claim/testosterone-replacement-therapy-anti-aging)
- [Vitamin D supplementation reduces mortality](https://www.longevinsights.com/claim/vitamin-d-reduces-mortality)
- [The Wim Hof breathing method boosts immunity](https://www.longevinsights.com/claim/wim-hof-breathing-boosts-immunity)
- [Zone 2 cardio is the best exercise for longevity](https://www.longevinsights.com/claim/zone-2-cardio-best-for-longevity)

## Clinic directory

- [Abano Terme](https://www.longevinsights.com/clinics/by-city/abano-terme): 1 clinic listed
- [Abu Dhabi](https://www.longevinsights.com/clinics/by-city/abu-dhabi): 1 clinic listed
- [Alfaz del Pi](https://www.longevinsights.com/clinics/by-city/alfaz-del-pi): 1 clinic listed
- [Altaussee](https://www.longevinsights.com/clinics/by-city/altaussee): 1 clinic listed
- [Amsterdam](https://www.longevinsights.com/clinics/by-city/amsterdam): 1 clinic listed
- [Atlanta](https://www.longevinsights.com/clinics/by-city/atlanta): 1 clinic listed
- [Baarn](https://www.longevinsights.com/clinics/by-city/baarn): 1 clinic listed
- [Bad Ragaz](https://www.longevinsights.com/clinics/by-city/bad-ragaz): 1 clinic listed
- [Baden-Baden](https://www.longevinsights.com/clinics/by-city/baden-baden): 1 clinic listed
- [Barcelona](https://www.longevinsights.com/clinics/by-city/barcelona): 3 clinics listed
- [Bari](https://www.longevinsights.com/clinics/by-city/bari): 1 clinic listed
- [Bellevue](https://www.longevinsights.com/clinics/by-city/bellevue): 1 clinic listed
- [Benicassim](https://www.longevinsights.com/clinics/by-city/benicassim): 1 clinic listed
- [Berlin](https://www.longevinsights.com/clinics/by-city/berlin): 1 clinic listed
- [Berwyn](https://www.longevinsights.com/clinics/by-city/berwyn): 1 clinic listed
- [Beverly Hills](https://www.longevinsights.com/clinics/by-city/beverly-hills): 1 clinic listed
- [Boulder](https://www.longevinsights.com/clinics/by-city/boulder): 1 clinic listed
- [Bussolengo](https://www.longevinsights.com/clinics/by-city/bussolengo): 1 clinic listed
- [Calgary](https://www.longevinsights.com/clinics/by-city/calgary): 1 clinic listed
- [Castrocaro Terme](https://www.longevinsights.com/clinics/by-city/castrocaro-terme): 1 clinic listed
- [Chicago](https://www.longevinsights.com/clinics/by-city/chicago): 2 clinics listed
- [Cleveland](https://www.longevinsights.com/clinics/by-city/cleveland): 1 clinic listed
- [Copenhagen](https://www.longevinsights.com/clinics/by-city/copenhagen): 1 clinic listed
- [Dallas](https://www.longevinsights.com/clinics/by-city/dallas): 4 clinics listed
- [Doha](https://www.longevinsights.com/clinics/by-city/doha): 1 clinic listed
- [Dubai](https://www.longevinsights.com/clinics/by-city/dubai): 4 clinics listed
- [Eemnes](https://www.longevinsights.com/clinics/by-city/eemnes): 1 clinic listed
- [Elk Grove](https://www.longevinsights.com/clinics/by-city/elk-grove): 1 clinic listed
- [Essen](https://www.longevinsights.com/clinics/by-city/essen): 1 clinic listed
- [Fayetteville](https://www.longevinsights.com/clinics/by-city/fayetteville): 1 clinic listed
- [Genolier](https://www.longevinsights.com/clinics/by-city/genolier): 1 clinic listed
- [Glendale](https://www.longevinsights.com/clinics/by-city/glendale): 1 clinic listed
- [Graz](https://www.longevinsights.com/clinics/by-city/graz): 1 clinic listed
- [Greenwood Village](https://www.longevinsights.com/clinics/by-city/greenwood-village): 1 clinic listed
- [Houston](https://www.longevinsights.com/clinics/by-city/houston): 1 clinic listed
- [Houten](https://www.longevinsights.com/clinics/by-city/houten): 1 clinic listed
- [Innsbruck](https://www.longevinsights.com/clinics/by-city/innsbruck): 1 clinic listed
- [Kent](https://www.longevinsights.com/clinics/by-city/kent): 1 clinic listed
- [Lans](https://www.longevinsights.com/clinics/by-city/lans): 1 clinic listed
- [Le Mont-Pelerin](https://www.longevinsights.com/clinics/by-city/le-mont-pelerin): 1 clinic listed
- [Lexington](https://www.longevinsights.com/clinics/by-city/lexington): 1 clinic listed
- [London](https://www.longevinsights.com/clinics/by-city/london): 11 clinics listed
- [Los Angeles](https://www.longevinsights.com/clinics/by-city/los-angeles): 4 clinics listed
- [Los Gatos](https://www.longevinsights.com/clinics/by-city/los-gatos): 1 clinic listed
- [Lustmuhle](https://www.longevinsights.com/clinics/by-city/lustmuhle): 1 clinic listed
- [Maria Woerth](https://www.longevinsights.com/clinics/by-city/maria-woerth): 1 clinic listed
- [Merano](https://www.longevinsights.com/clinics/by-city/merano): 1 clinic listed
- [Mexico City](https://www.longevinsights.com/clinics/by-city/mexico-city): 2 clinics listed
- [Miami](https://www.longevinsights.com/clinics/by-city/miami): 5 clinics listed
- [Milan](https://www.longevinsights.com/clinics/by-city/milan): 1 clinic listed
- [Montecito](https://www.longevinsights.com/clinics/by-city/montecito): 1 clinic listed
- [Montreal](https://www.longevinsights.com/clinics/by-city/montreal): 1 clinic listed
- [Montreux](https://www.longevinsights.com/clinics/by-city/montreux): 1 clinic listed
- [Munich](https://www.longevinsights.com/clinics/by-city/munich): 1 clinic listed
- [Naples](https://www.longevinsights.com/clinics/by-city/naples): 1 clinic listed
- [Nashville](https://www.longevinsights.com/clinics/by-city/nashville): 2 clinics listed
- [Neuilly-sur-Seine](https://www.longevinsights.com/clinics/by-city/neuilly-sur-seine): 1 clinic listed
- [New York](https://www.longevinsights.com/clinics/by-city/new-york): 9 clinics listed
- [Newport Beach](https://www.longevinsights.com/clinics/by-city/newport-beach): 1 clinic listed
- [Noordwijk](https://www.longevinsights.com/clinics/by-city/noordwijk): 1 clinic listed
- [North Vancouver](https://www.longevinsights.com/clinics/by-city/north-vancouver): 1 clinic listed
- [Orlando](https://www.longevinsights.com/clinics/by-city/orlando): 1 clinic listed
- [Ottawa](https://www.longevinsights.com/clinics/by-city/ottawa): 1 clinic listed
- [Paris](https://www.longevinsights.com/clinics/by-city/paris): 4 clinics listed
- [Park City](https://www.longevinsights.com/clinics/by-city/park-city): 1 clinic listed
- [Punta Mita](https://www.longevinsights.com/clinics/by-city/punta-mita): 1 clinic listed
- [Rivoli](https://www.longevinsights.com/clinics/by-city/rivoli): 1 clinic listed
- [Rome](https://www.longevinsights.com/clinics/by-city/rome): 1 clinic listed
- [Roseville](https://www.longevinsights.com/clinics/by-city/roseville): 1 clinic listed
- [San Diego](https://www.longevinsights.com/clinics/by-city/san-diego): 1 clinic listed
- [San Francisco](https://www.longevinsights.com/clinics/by-city/san-francisco): 1 clinic listed
- [San Mateo](https://www.longevinsights.com/clinics/by-city/san-mateo): 1 clinic listed
- [San Severino Marche](https://www.longevinsights.com/clinics/by-city/san-severino-marche): 1 clinic listed
- [Santa Monica](https://www.longevinsights.com/clinics/by-city/santa-monica): 1 clinic listed
- [Scottsdale](https://www.longevinsights.com/clinics/by-city/scottsdale): 1 clinic listed
- [Sorengo](https://www.longevinsights.com/clinics/by-city/sorengo): 1 clinic listed
- [South San Francisco](https://www.longevinsights.com/clinics/by-city/south-san-francisco): 1 clinic listed
- [The Colony](https://www.longevinsights.com/clinics/by-city/the-colony): 1 clinic listed
- [Tijuana](https://www.longevinsights.com/clinics/by-city/tijuana): 1 clinic listed
- [Toronto](https://www.longevinsights.com/clinics/by-city/toronto): 1 clinic listed
- [Uberlingen](https://www.longevinsights.com/clinics/by-city/uberlingen): 1 clinic listed
- [Valencia](https://www.longevinsights.com/clinics/by-city/valencia): 1 clinic listed
- [Vienna](https://www.longevinsights.com/clinics/by-city/vienna): 2 clinics listed
- [Wailea](https://www.longevinsights.com/clinics/by-city/wailea): 1 clinic listed
- [Weggis](https://www.longevinsights.com/clinics/by-city/weggis): 1 clinic listed
- [West Hollywood](https://www.longevinsights.com/clinics/by-city/west-hollywood): 1 clinic listed
- [White Plains](https://www.longevinsights.com/clinics/by-city/white-plains): 1 clinic listed
- [Woodland Hills](https://www.longevinsights.com/clinics/by-city/woodland-hills): 1 clinic listed
- [Zurich](https://www.longevinsights.com/clinics/by-city/zurich): 3 clinics listed