What is the Longevity Research Library?

The Longevity Switzerland 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

13/129

Topic

Jun 14–20, 2026

2 studies

GLP-1

Why GLP-1 Weight Loss Can Cost You Muscle After 60

GLP-1 drugs like Ozempic help older adults shed weight, but a lot of that loss can be muscle.

Current nutrition reports·Moderate·Jun 17, 2026

sarcopenia

For Older Adults Losing Muscle, Lifting Weights Beats Cardio

As we age, we lose muscle and strength, a condition called sarcopenia.

Scientific reports·Moderate·Jun 17, 2026

May 31 – Jun 6, 2026

3 studies

exercise

Staying Active From Midlife Cuts Sarcopenia Risk by Up to 78%

In Norwegians tracked for over 30 years, those who stayed active from middle age into their 70s had 78% lower odds of confirmed muscle loss.

BMC geriatrics·Strong·Jun 4, 2026

vitamin D

Low Vitamin D Linked to Muscle Loss, Especially in People With Diabetes

In a study of over 7,500 older adults, low vitamin D was tied to higher odds of sarcopenia (age-related muscle loss).

The journal of nutrition, health & aging·Moderate·Jun 2, 2026

sarcopenia

Muscle Quality Beats Muscle Quantity for Healthy Aging

Looking at adults across the UK, US, and Taiwan, researchers found the muscle-to-fat ratio matters more than raw muscle mass for healthy…

Journal of cachexia, sarcopenia and muscle·Moderate·Jun 1, 2026

May 17–23, 2026

1 study

exercise

Exercise Builds Muscle and Strength in Postmenopausal Women With Sarcopenia

Postmenopausal women often lose muscle as hormones shift and age catches up.

Frontiers in public health·Strong·May 20, 2026

May 10–16, 2026

1 study

sarcopenia

Losing Your Sense Of Smell May Signal Faster Muscle Decline With Age

In adults aged 71 to 82, those who had lost their sense of smell lost grip strength faster over seven years.

The journals of gerontology. Series A, Biological sciences and medical sciences·Moderate·May 11, 2026

May 3–9, 2026

2 studies

protein

Why Standard Protein Advice May Fall Short for Older Adults

This review argues that general protein guidelines may not be enough for older adults trying to keep their muscle.

Frontiers in nutrition·Moderate·May 8, 2026

vitamin E

Vitamin E Tocotrienols May Calm Oxidative Stress in Aging Muscle

In aging rats, a tocotrienol-rich form of vitamin E lowered oxidative damage and inflammation in muscle tissue, even though it didn't…

British journal of biomedical science·Preliminary·May 8, 2026

Apr 26 – May 2, 2026

2 studies

exercise

Exercise Lowers One Key Inflammation Marker in Frail Seniors, But Not Others

Looking at dozens of trials in older adults with frailty or muscle loss, researchers checked whether exercise calmed chronic inflammation.

Frontiers in immunology·Strong·Apr 30, 2026

sarcopenia

Why Losing Muscle With Age May Raise Your Cancer Risk

Healthy muscle releases tiny packets called extracellular vesicles that actually suppress tumor growth.

Nature communications·Preliminary·Apr 27, 2026

Apr 5–11, 2026

1 study

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

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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