Research Library

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

5 papers added this week271 in the librarylast reviewed 17 Sept

Every study in the library, with its evidence grade, study type, sample size, journal and date.
Study	Evidence	Type	n	Journal	Date
Aug 24–30, 20262 studies
After 70, Staying Fit for Just One More Year Cut Heart Risk by 40%Norwegian adults aged 70 to 77 had their actual oxygen uptake measured, not just guessed from a questionnaire.	Moderate	Journal Article	1,547	European journal of preventive cardiology	30 Aug 2026
Creatine Adds a Small Strength Boost to Lifting Weights After 60Older adults who took creatine alongside resistance training got stronger than those who just lifted weights.	Moderate	Journal Article	11	Frontiers in nutrition	25 Aug 2026
Aug 3–9, 20262 studies
How Fast You Stand Up May Predict Your Lifespan Better Than Your IllnessesDoctors usually judge older patients by their list of diagnoses.	Moderate	Journal Article	13,423	JAMA network open	03 Aug 2026
One Snapshot of Health Misses the Point. The Direction You're Heading Matters MoreCanadian researchers tracked physical and mental function in over 300,000 older adults getting care at home.	Moderate	Journal Article	302,467	Age and ageing	03 Aug 2026
Jul 27 – Aug 2, 20261 study
For Frail Older Adults, Gentle Cardio Beats Chasing a Perfect DoseLooking across dozens of trials in frail and pre-frail people over 60, regular cardio improved frailty scores, mood, leg strength, quality…	Moderate	Journal Article	44	Clinical nutrition (Edinburgh, Scotland)	01 Aug 2026
Jul 20–26, 20262 studies
Vitamin D Only Seems to Slow Aging Markers If You Were Low to Begin WithVitamin D talks directly to your genes, switching them on and off in ways that overlap with how aging works.	Moderate	Journal Article	—	International journal of molecular sciences	24 Jul 2026
Why Small Nutrient Gaps May Quietly Speed Up Aging After Your 40sThis review argues that common shortfalls in vitamins and minerals like B vitamins, C, D, E, zinc, and selenium may speed up biological…	Moderate	Journal Article	—	GeroScience	23 Jul 2026
Jun 15–21, 20261 study
Tirzepatide Works Just as Well and as Safely for Adults Over 65Tirzepatide is the popular GLP-1 weight loss drug also sold as Mounjaro and Zepbound.	Moderate	Journal Article	3	Diabetes, obesity & metabolism	16 Jun 2026
Jun 1–7, 20261 study
Muscle Quality Beats Muscle Quantity for Healthy AgingLooking at adults across the UK, US, and Taiwan, researchers found the muscle-to-fat ratio matters more than raw muscle mass for healthy…	Moderate	Journal Article	49,500	Journal of cachexia, sarcopenia and muscle	01 Jun 2026
May 25–31, 20261 study
Why Your Mitochondria May Be Driving Aging and Chronic InflammationScientists are zeroing in on mitochondria (the energy factories in your cells) as a main driver of aging, not just a casualty of it.	Moderate	Journal Article	—	npj aging	28 May 2026

Aug 24–30, 2026

2 studies

cardiorespiratory fitness

After 70, Staying Fit for Just One More Year Cut Heart Risk by 40%

Norwegian adults aged 70 to 77 had their actual oxygen uptake measured, not just guessed from a questionnaire.

European journal of preventive cardiology·Moderate·Aug 30, 2026

creatine

Creatine Adds a Small Strength Boost to Lifting Weights After 60

Older adults who took creatine alongside resistance training got stronger than those who just lifted weights.

Frontiers in nutrition·Moderate·Aug 25, 2026

Aug 3–9, 2026

2 studies

fitness

How Fast You Stand Up May Predict Your Lifespan Better Than Your Illnesses

Doctors usually judge older patients by their list of diagnoses.

JAMA network open·Moderate·Aug 3, 2026

Healthy Aging

One Snapshot of Health Misses the Point. The Direction You're Heading Matters More

Canadian researchers tracked physical and mental function in over 300,000 older adults getting care at home.

Age and ageing·Moderate·Aug 3, 2026

Jul 27 – Aug 2, 2026

1 study

Exercise

For Frail Older Adults, Gentle Cardio Beats Chasing a Perfect Dose

Looking across dozens of trials in frail and pre-frail people over 60, regular cardio improved frailty scores, mood, leg strength, quality…

Clinical nutrition (Edinburgh, Scotland)·Moderate·Aug 1, 2026

Jul 20–26, 2026

2 studies

vitamin D

Vitamin D Only Seems to Slow Aging Markers If You Were Low to Begin With

Vitamin D talks directly to your genes, switching them on and off in ways that overlap with how aging works.

International journal of molecular sciences·Moderate·Jul 24, 2026

micronutrients

Why Small Nutrient Gaps May Quietly Speed Up Aging After Your 40s

This review argues that common shortfalls in vitamins and minerals like B vitamins, C, D, E, zinc, and selenium may speed up biological…

GeroScience·Moderate·Jul 23, 2026

Jun 15–21, 2026

1 study

GLP-1

Tirzepatide Works Just as Well and as Safely for Adults Over 65

Tirzepatide is the popular GLP-1 weight loss drug also sold as Mounjaro and Zepbound.

Diabetes, obesity & metabolism·Moderate·Jun 16, 2026

Jun 1–7, 2026

1 study

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 25–31, 2026

1 study

mitochondria

Why Your Mitochondria May Be Driving Aging and Chronic Inflammation

Scientists are zeroing in on mitochondria (the energy factories in your cells) as a main driver of aging, not just a casualty of it.

npj aging·Moderate·May 28, 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.

Common questions

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.

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