Research Library

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

3 papers added this week283 in the librarylast reviewed 28 Sept

Evidence

42/283

Topic

Every study in the library, with its evidence grade, study type, sample size, journal and date.
Study	Evidence	Type	n	Journal	Date
Jul 27 – Aug 2, 20263 studies
A Probiotic Fixed Blood Sugar in Old Male Mice, But Did Nothing for FemalesOlder male mice had much worse blood sugar control than females, and they were also low on citrulline (an amino acid made partly by gut…	Preliminary	Journal Article	—	Aging cell	01 Aug 2026
The Gut-Brain-Skin Link: Why Omega-3s and Probiotics Keep Showing Up in Skin StudiesYour gut, brain, and skin appear to talk to each other through immune signals, hormones, and bacteria-made molecules.	Preliminary	Journal Article	—	International journal of molecular sciences	29 Jul 2026
NMN Plus Stem Cells Slowed Aging Signs in Mice, Together More Than AloneIn aged mice, pairing stem cell therapy with NMN worked better than either one alone.	Preliminary	Journal Article	—	Mechanisms of ageing and development	28 Jul 2026
Jul 20–26, 20262 studies
A New Trick Reverses Aging Cells in Arthritic Cartilage, at Least in RatsOld, worn-out cells pile up in joints and drive arthritis as we age.	Preliminary	Journal Article	—	Journal of advanced research	25 Jul 2026
NR May Slow Muscle Aging Clocks While Hard Interval Training Speeds Some UpNicotinamide riboside, a popular NAD+ booster, was linked to slower epigenetic aging in muscle across several aging clocks.	Preliminary	Journal Article	—	Aging cell	24 Jul 2026
Jul 13–19, 20264 studies
A Single Protein's Decline in Immune Cells May Drive Body-Wide AgingIn mice, a protein called Lamtor5 drops with age and lets immune cells called macrophages go into a worn-out, inflammatory state.	Preliminary	Journal Article	—	Cell death and differentiation	16 Jul 2026
Aging Blood Stem Cells May Be a Hidden Source of Chronic InflammationIn mice, the stem cells that make blood become a driver of the constant, low-level inflammation that comes with age.	Preliminary	Journal Article	—	Nature aging	16 Jul 2026
A Little Body Fat in Old Age May Actually Help You Live LongerScientists found that a small amount of fat buildup during aging helped worms live longer, not shorter.	Preliminary	Journal Article	—	Nature communications	14 Jul 2026
A Resveratrol Cousin Cleared Aging Cells and Boosted Memory in MicePiceatannol is a natural compound related to resveratrol that our bodies absorb more easily.	Preliminary	Journal Article	—	Cell death discovery	14 Jul 2026
Jul 6–12, 20261 study
Broken Elastin Bits May Drive the Joint Wear That Comes With AgingScientists found that when your body's elastin (the protein that keeps tissue springy) breaks into fragments, those bits trigger…	Preliminary	Journal Article	—	Proceedings of the National Academy of Sciences of the United States of America	08 Jul 2026
Jun 29 – Jul 5, 20262 studies
How Chronic Stress Ages Your Blood Stem Cells Through the GutIn mice, ongoing psychological stress made blood-forming stem cells act older and worn out.	Preliminary	Journal Article	—	Cell stem cell	02 Jul 2026
Taurine Plus Diet Tweaks and Exercise Extended Life in Flies Without a CatchIn fruit flies, mixing methionine restriction, taurine, and moderate exercise added up to a longer life.	Preliminary	Journal Article	—	Aging cell	01 Jul 2026

Jul 27 – Aug 2, 2026

3 studies

probiotics

A Probiotic Fixed Blood Sugar in Old Male Mice, But Did Nothing for Females

Older male mice had much worse blood sugar control than females, and they were also low on citrulline (an amino acid made partly by gut…

Aging cell·Preliminary·Aug 1, 2026

skin aging

The Gut-Brain-Skin Link: Why Omega-3s and Probiotics Keep Showing Up in Skin Studies

Your gut, brain, and skin appear to talk to each other through immune signals, hormones, and bacteria-made molecules.

International journal of molecular sciences·Preliminary·Jul 29, 2026

NMN

NMN Plus Stem Cells Slowed Aging Signs in Mice, Together More Than Alone

In aged mice, pairing stem cell therapy with NMN worked better than either one alone.

Mechanisms of ageing and development·Preliminary·Jul 28, 2026

Jul 20–26, 2026

2 studies

senescence

A New Trick Reverses Aging Cells in Arthritic Cartilage, at Least in Rats

Old, worn-out cells pile up in joints and drive arthritis as we age.

Journal of advanced research·Preliminary·Jul 25, 2026

nicotinamide riboside

NR May Slow Muscle Aging Clocks While Hard Interval Training Speeds Some Up

Nicotinamide riboside, a popular NAD+ booster, was linked to slower epigenetic aging in muscle across several aging clocks.

Aging cell·Preliminary·Jul 24, 2026

Jul 13–19, 2026

4 studies

immune aging

A Single Protein's Decline in Immune Cells May Drive Body-Wide Aging

In mice, a protein called Lamtor5 drops with age and lets immune cells called macrophages go into a worn-out, inflammatory state.

Cell death and differentiation·Preliminary·Jul 16, 2026

stem cells

Aging Blood Stem Cells May Be a Hidden Source of Chronic Inflammation

In mice, the stem cells that make blood become a driver of the constant, low-level inflammation that comes with age.

Nature aging·Preliminary·Jul 16, 2026

metabolism

A Little Body Fat in Old Age May Actually Help You Live Longer

Scientists found that a small amount of fat buildup during aging helped worms live longer, not shorter.

Nature communications·Preliminary·Jul 14, 2026

senescence

A Resveratrol Cousin Cleared Aging Cells and Boosted Memory in Mice

Piceatannol is a natural compound related to resveratrol that our bodies absorb more easily.

Cell death discovery·Preliminary·Jul 14, 2026

Jul 6–12, 2026

1 study

osteoarthritis

Broken Elastin Bits May Drive the Joint Wear That Comes With Aging

Scientists found that when your body's elastin (the protein that keeps tissue springy) breaks into fragments, those bits trigger…

Proceedings of the National Academy of Sciences of the United States of America·Preliminary·Jul 8, 2026

Jun 29 – Jul 5, 2026

2 studies

stress

How Chronic Stress Ages Your Blood Stem Cells Through the Gut

In mice, ongoing psychological stress made blood-forming stem cells act older and worn out.

Cell stem cell·Preliminary·Jul 2, 2026

taurine

Taurine Plus Diet Tweaks and Exercise Extended Life in Flies Without a Catch

In fruit flies, mixing methionine restriction, taurine, and moderate exercise added up to a longer life.

Aging cell·Preliminary·Jul 1, 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 Germany 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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