Evidence library

Research.

This category follows ideas being studied for aging itself. Mechanistic promise, animal lifespan extension, and biomarker movement can justify research, but none alone proves that an intervention extends healthy human life.

11 evidence-ranked entries
Important limitations

What the evidence cannot settle yet

Most entries lack randomized human aging outcomes, use small or disease-specific samples, or depend on surrogate endpoints. The strongest current rating in this category can still fall below the strongest rating elsewhere in the library.

Safety themes

Risks depend on the intervention

Long-term safety in healthy people is often unknown. Unapproved drugs, gene therapies, transfusions, and self-experimentation can introduce risks that early efficacy studies are too small or short to measure.

Strongest current evidence

Moderate evidence leads this category

Ratings compare confidence in each entry's stated benefit—not whether every intervention is appropriate or recommended.

How ratings work
Browse the evidence

Every research entry

Sorted from stronger to weaker evidence.

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 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 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 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.