What is the Longevity Research Library?

The Longevity USA Research Library curates recent peer-reviewed studies on longevity, nutrition, exercise, sleep, and supplements. Each study is rated by evidence strength: Strong, Moderate, or Preliminary.

How are evidence levels determined?

Evidence levels are based on study type (meta-analysis, RCT, cohort study), sample size, journal impact factor, and reproducibility of findings.

Research Digest

Research Library

Peer-reviewed papers from top journals, summarized and graded by evidence strength. Updated Mon, Wed & Fri.

Evidence

8/156

Topic

Jun 14–20, 2026

1 study

physical activity

Going From Zero to Just 5 Minutes of Exercise a Week Cuts Death Risk

Many people think you need to hit big step counts to live longer.

Annals of epidemiology·Strong·Jun 17, 2026

May 31 – Jun 6, 2026

1 study

resistance training

Two Hours of Weekly Strength Training Hits the Sweet Spot for Longevity

In nearly 150,000 adults tracked for up to 30 years, doing 90 to 119 minutes of strength training per week was linked to a 13% lower risk…

British journal of sports medicine·Strong·Jun 2, 2026

May 24–30, 2026

1 study

selenium

Selenium Levels and Fatty Liver: Is There a Sweet Spot for Survival?

In nearly 1,800 American adults with fatty liver disease, those with higher blood selenium had a 64% lower risk of dying from any cause…

Scandinavian journal of gastroenterology·Moderate·May 30, 2026

Apr 12–18, 2026

1 study

biological aging

Tracking Your 'Biological Age' Over Time May Predict Death Risk Better Than a Single Snapshot

In over 90,000 Dutch adults followed for nearly 14 years, people whose biological age ran ahead of their calendar age had a higher risk of…

GeroScience·Moderate·Apr 14, 2026

Apr 5–11, 2026

2 studies

exercise

Regular Exercise Cuts Death Risk Even in Older Adults With Muscle Loss

Older adults with sarcopenia (age-related muscle loss) or trouble with daily tasks faced a much higher risk of dying.

iScience·Strong·Apr 9, 2026

frailty

Frailty Doubles Death Risk in People With Heart and Metabolic Disease

Looking at five large studies across the US, UK, and China, people with heart or metabolic conditions who were frail had up to 132% higher…

iScience·Strong·Apr 8, 2026

Mar 15–21, 2026

1 study

frailty

Frailty Triples Death Risk, and Exercise Alone May Not Fix It

Frail adults in South Korea had over three times the mortality risk compared to robust individuals over a 16-year follow-up.

The Journal of frailty & aging·Moderate·Mar 19, 2026

Mar 8–14, 2026

1 study

frailty

Frailty Markers Predict 20-Year Death Risk in Older Chinese Adults

In about 4,000 older Hong Kong adults tracked for nearly two decades, frailty measures strongly predicted who would die and from what cause.

The journals of gerontology. Series A, Biological sciences and medical sciences·Strong·Mar 13, 2026

Disclaimer: Research summaries are provided for informational purposes only and do not constitute medical advice. Always consult a qualified healthcare professional before making changes to your health routine.

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