Independent longevity index · v0.1

Live longer.Know what works.

A clear, evidence-ranked library of skincare, supplements, nootropics, weight management, peptides, lifestyle, and the science shaping healthy longevity.

Human data prioritized
Sources attached
Uncertainty made visible
Updated as science moves
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The longevity library

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71 resources
Open Tretinoin
Strong
Skincare

Tretinoin

A prescription topical retinoid with strong evidence for improving visible signs of sun-damaged skin.

Open Broad-Spectrum SPF
Strong
Skincare

Broad-Spectrum SPF

Daily broad-spectrum sunscreen has randomized evidence for slowing visible photoaging while reducing ultraviolet exposure.

Open Creatine Monohydrate
Strong
Supplements

Creatine Monohydrate

A well-studied supplement for high-intensity performance, muscle, and strength, including during resistance training in older adults.

Open Semaglutide
Strong
Weight loss

Semaglutide

A prescription GLP-1 medicine with strong trial evidence for substantial weight loss in eligible adults when combined with lifestyle support.

Open Tirzepatide
Strong
Weight loss

Tirzepatide

A prescription GIP/GLP-1 medicine that produced substantial, sustained weight loss in a large phase 3 obesity trial.

Open Psyllium Husk
Strong
Supplements

Psyllium Husk

A soluble viscous fiber with replicated evidence for lowering LDL cholesterol and improving chronic constipation when taken with enough fluid.

Open Tesamorelin
Strong
Peptides

Tesamorelin

An approved growth-hormone-releasing peptide that reduces visceral fat in HIV-associated lipodystrophy but is not a general weight-loss or anti-aging treatment.

Open Metabolic and Bariatric Surgery
Strong
Weight loss

Metabolic and Bariatric Surgery

The most durable established treatment for severe obesity, with large weight and metabolic benefits alongside procedure-specific lifelong risks and follow-up.

Open Aerobic Physical Activity
Strong
Lifestyle

Aerobic Physical Activity

Regular walking and other aerobic activity preserve mobility and cardiometabolic health, with the largest practical gain coming from moving out of inactivity.

Open Resistance Training
Strong
Lifestyle

Resistance Training

Progressive strength training reliably improves muscle strength and physical function across age, including in very old and frail adults.

Open Smoking Cessation
Strong
Lifestyle

Smoking Cessation

Stopping smoking improves health at any age, with unusually strong mortality evidence and effective combinations of behavioral and medication support.

Open Protein Supplementation
Strong
Supplements

Protein Supplementation

A practical way to close a dietary protein gap, with the clearest muscle benefit when paired with resistance training rather than used alone.

Open Plant Sterols and Stanols
Strong
Supplements

Plant Sterols and Stanols

Food-derived compounds that reliably lower LDL cholesterol when consumed in fortified foods, without direct evidence that supplements prevent heart attacks or extend life.

Open Caffeine
Strong
Nootropics

Caffeine

A well-studied stimulant that reliably improves alertness and attention, with sleep disruption and tolerance as the main tradeoffs.

Open Liraglutide
Strong
Weight loss

Liraglutide

A daily GLP-1 receptor agonist with strong obesity-trial evidence for clinically meaningful weight loss, balanced against gastrointestinal effects, cost, and regain after stopping.

Open Orlistat
Strong
Weight loss

Orlistat

An oral intestinal lipase inhibitor that produces modest, durable weight loss but commonly causes meal-dependent gastrointestinal effects.

Open Phentermine + Topiramate
Strong
Weight loss

Phentermine + Topiramate

An effective once-daily oral obesity medicine whose weight-loss benefit must be balanced against pregnancy, cognitive, mood, and cardiovascular precautions.

Open Intensive Lifestyle Intervention
Strong
Weight loss

Intensive Lifestyle Intervention

A high-contact program of calorie reduction, physical activity, behavioral skills, and long-term support that can sustain meaningful weight loss without guaranteeing cardiovascular-event reduction.

Open DASH Eating Pattern
Strong
Lifestyle

DASH Eating Pattern

A flexible eating pattern rich in fruits, vegetables, legumes, whole grains, and low-fat dairy with strong evidence for lowering blood pressure.

Open Cognitive Behavioral Therapy for Insomnia
Strong
Lifestyle

Cognitive Behavioral Therapy for Insomnia

A structured, first-line insomnia treatment that produces durable improvements in sleep without relying on nightly sedative medication.

Open Adapalene
Strong
Skincare

Adapalene

A topical retinoid with strong acne evidence and smaller off-label evidence for photoaging.

Open Niacinamide
Moderate
Skincare

Niacinamide

A well-tolerated vitamin B3 derivative with controlled human evidence for modest improvements in visible photoaging, pigmentation, and skin-barrier function.

Open Omega-3s
Moderate
Supplements

Omega-3s

Routine fish-oil supplements do not clearly prevent major cardiovascular events, while selected prescription formulations have narrower evidence and different risks.

Open Mediterranean-Style Eating
Moderate
Lifestyle

Mediterranean-Style Eating

A flexible food pattern with randomized evidence for fewer cardiovascular events in high-risk adults, tempered by influential-trial limitations and variable definitions.

Open Retinol
Moderate
Skincare

Retinol

An over-the-counter vitamin A derivative with controlled human evidence for modest wrinkle improvement, but less standardization than prescription tretinoin.

Open Vitamin D
Moderate
Supplements

Vitamin D

Essential for calcium and bone biology and useful for treating deficiency, but routine supplementation has not delivered broad longevity benefits in generally healthy adults.

Open Tai Chi
Moderate
Lifestyle

Tai Chi

A low-impact mind-body exercise with credible evidence for improving balance and reducing falls in older adults, but no direct longevity proof.

Open Caloric Restriction
Moderate
Research

Caloric Restriction

Sustained energy reduction without malnutrition that improves several cardiometabolic markers in non-obese adults but has not been shown to extend human lifespan.

Open Ketogenic Diet
Moderate
Lifestyle

Ketogenic Diet

A very-low-carbohydrate, high-fat eating pattern with an established specialist role in drug-resistant epilepsy and mixed, mostly short-term evidence for weight and metabolic outcomes.

Open Hyaluronic Acid
Moderate
Skincare

Hyaluronic Acid

A generally well-tolerated topical humectant that reliably improves surface hydration, with smaller and more formulation-specific evidence for temporary smoothing of fine lines.

Open Azelaic Acid
Moderate
Skincare

Azelaic Acid

A topical dicarboxylic acid with useful evidence for acne, papulopustular rosacea, and some hyperpigmentation disorders.

Open Ceramide Moisturizers
Moderate
Skincare

Ceramide Moisturizers

Barrier-supporting moisturizers that help dry and eczema-prone skin, without clear proof that ceramides outperform every simpler emollient.

Open Urea
Moderate
Skincare

Urea

A concentration-dependent moisturizer and keratolytic with useful evidence for dry, thickened, and scaly skin.

Open Magnesium
Moderate
Supplements

Magnesium

An essential mineral where correcting deficiency is important, while extra supplementation offers narrower, indication-specific benefits.

Open Zinc
Moderate
Supplements

Zinc

An essential trace mineral where deficiency correction matters and oral lozenges may shorten a cold, but excess use can create copper deficiency and neurologic harm.

Open Probiotics
Moderate
Supplements

Probiotics

Live microorganisms whose effects are strain- and indication-specific, with the clearest signal in preventing some antibiotic-associated diarrhea.

Open Melatonin
Moderate
Nootropics

Melatonin

A circadian-timing hormone useful for jet lag and selected sleep-timing problems, with only small average effects in chronic insomnia.

Open Naltrexone + Bupropion
Moderate
Weight loss

Naltrexone + Bupropion

An oral prescription combination that produces modest average weight loss but has important opioid, seizure, blood-pressure, and psychiatric precautions.

Open Setmelanotide
Moderate
Weight loss

Setmelanotide

A daily MC4-receptor agonist for specific rare genetic and acquired hypothalamic obesity—not a general obesity drug.

Open Collagen Peptides
Emerging
Peptides

Collagen Peptides

Oral hydrolyzed collagen may modestly improve skin hydration or elasticity, but study quality and industry funding temper confidence.

Open GlyNAC
Emerging
Supplements

GlyNAC

A glycine and N-acetylcysteine combination with promising but preliminary human data on glutathione and aging-related markers.

Open Caffeine + L-Theanine
Emerging
Nootropics

Caffeine + L-Theanine

A tea-derived pairing with evidence for small, short-term attention benefits in controlled laboratory tasks.

Open Bacopa Monnieri
Emerging
Nootropics

Bacopa Monnieri

A traditional herbal extract with inconsistent modern evidence for memory and attention and meaningful variation between products.

Open Vitamin C
Emerging
Skincare

Vitamin C

Some formulations may modestly improve pigmentation and visible photoaging, but a small heterogeneous evidence base and unstable chemistry make products hard to compare.

Open Modafinil
Emerging
Nootropics

Modafinil

A prescription wakefulness medicine with only a very small average cognitive effect in rested healthy adults and important medical, interaction, and sporting constraints.

Open Lion's Mane
Emerging
Nootropics

Lion's Mane

A popular medicinal mushroom with intriguing preclinical biology but mixed, tiny, and product-specific human cognition studies.

Open Retatrutide
Emerging
Weight loss

Retatrutide

An investigational triple-hormone-receptor agonist with unusually large phase 2 weight-loss results and promising but not yet peer-reviewed phase 3 toplines.

Open GHK-Cu
Emerging
Peptides

GHK-Cu

A copper-binding peptide with plausible skin and wound biology but sparse controlled human evidence and no established role for injectable anti-aging use.

Open NAD+ Precursors
Emerging
Research

NAD+ Precursors

Nicotinamide riboside and NMN reliably alter NAD-related biomarkers, but human trials have not established broad improvements in function, disease prevention, or longevity.

Open Acarbose for Longevity
Emerging
Research

Acarbose for Longevity

A prescription carbohydrate-absorption drug that extends lifespan in mice and delays diabetes in some high-risk humans, without evidence that it extends human life.

Open Taurine for Longevity
Emerging
Research

Taurine for Longevity

An amino-sulfonic acid with striking animal-aging results and modest cardiometabolic trial signals, but conflicting human biomarker data and no lifespan evidence.

Open OPC (Grape Seed Extract)
Emerging
Supplements

OPC (Grape Seed Extract)

A proanthocyanidin-rich botanical extract with small, inconsistent effects on blood pressure and lipid markers, but no demonstrated protection from cardiovascular events or aging.

Open Glycolic Acid
Emerging
Skincare

Glycolic Acid

An alpha-hydroxy acid that can improve texture and discoloration, with effects and risks that rise sharply from home products to chemical peels.

Open Red Light Therapy
Emerging
Skincare

Red Light Therapy

Nonthermal red and near-infrared light with promising small trials for visible photoaging, but major device and dosing uncertainty.

Open Coenzyme Q10
Emerging
Supplements

Coenzyme Q10

A mitochondrial cofactor with a possible adjunctive role in heart failure, but inconsistent evidence for common wellness and statin-muscle claims.

Open Berberine
Emerging
Supplements

Berberine

A plant alkaloid with short-term glucose and lipid signals, limited by uneven trial quality, gastrointestinal effects, and broad interaction potential.

Open Curcumin (Turmeric Extract)
Emerging
Supplements

Curcumin (Turmeric Extract)

A variable botanical supplement with possible short-term knee-osteoarthritis symptom relief and a rare but real liver-injury signal.

Open Beetroot (Dietary Nitrate)
Emerging
Supplements

Beetroot (Dietary Nitrate)

A nitrate-rich food concentrate with small exercise and blood-pressure effects that vary by fitness, dose, product, and testing conditions.

Open Ashwagandha
Emerging
Nootropics

Ashwagandha

A traditional botanical with small short-term stress and sleep trials, substantial product variation, and uncommon liver and thyroid risks.

Open Rapamycin
Experimental
Research

Rapamycin

An mTOR inhibitor with compelling animal longevity data but no established anti-aging benefit in healthy humans.

Open Senolytics
Experimental
Research

Senolytics

Experimental compounds intended to remove senescent cells, with intriguing biology but only tiny early human studies.

Open Metformin
Experimental
Research

Metformin

A foundational diabetes medicine and prominent geroscience candidate whose observational longevity signals have not become proof of slower aging in healthy people.

Open Partial Cellular Reprogramming
Experimental
Research

Partial Cellular Reprogramming

A frontier gene-therapy strategy that can reset selected aging signals in animals and has only just entered localized first-in-human safety testing.

Open Resveratrol
Experimental
Research

Resveratrol

A heavily studied polyphenol with compelling laboratory biology but no clinical proof of slower human aging or longer life.

Open Spermidine
Experimental
Research

Spermidine

A dietary polyamine linked to autophagy in laboratory models, with early human trials that have not established cognitive, anti-aging, or longevity benefits.

Open BPC-157
Insufficient
Peptides

BPC-157

An unapproved research peptide promoted for healing despite an evidence base dominated by animal studies and unresolved safety questions.

Open CJC-1295 + Ipamorelin
Insufficient
Peptides

CJC-1295 + Ipamorelin

A marketed growth-hormone peptide stack with no controlled combination trial, ambiguous product identity, and major compounded-injection evidence gaps.

Open Ginkgo Biloba
Insufficient
Nootropics

Ginkgo Biloba

A widely marketed botanical that has not prevented dementia or slowed normal cognitive decline in large, rigorous trials.

Open Human Growth Hormone
Insufficient
Peptides

Human Growth Hormone

A prescription hormone with established replacement indications but an unfavorable benefit-risk profile for healthy-aging or physique use.

Open Young-Donor Plasma
Insufficient
Research

Young-Donor Plasma

An unapproved anti-aging intervention extrapolated from animal parabiosis, with no demonstrated clinical benefit and real transfusion-related risks.

Open Glucosamine + Chondroitin
Insufficient
Supplements

Glucosamine + Chondroitin

Popular osteoarthritis supplements with inconsistent symptom and joint-structure results that depend partly on formulation and study quality.

Research pulse · 04

What the science is saying now.

Short, plain-language reads on the studies worth paying attention to.

Read the latest notes
Featured brief · 6 min

Can we measure biological age well enough to act on it?

Where epigenetic clocks help, where they mislead, and what a useful marker needs to do.

BIOMARKERS
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