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.

Research Digest

Research Library

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

Evidence

30/156

Topic

Last week

2 studies

cardiorespiratory fitness

Staying Fit Before Age 70 Linked to Nearly Half the Alzheimer's Risk

Older adults with better heart and lung fitness had a much lower chance of developing Alzheimer's later on.

Medicine and science in sports and exercise·Moderate·Jul 3, 2026

exercise

Even Light, Unsupervised Exercise Improves Balance in Frail Older Adults

Older adults with muscle loss got noticeably steadier on their feet after doing exercise.

Journal of the American Medical Directors Association·Moderate·Jul 2, 2026

Jun 15–21, 2026

1 study

protein

Why How You Cook Meat Matters for Older Bodies That Absorb Less

As we age, our bodies get worse at breaking down and absorbing protein.

Food science of animal resources·Preliminary·Jun 18, 2026

Jun 8–14, 2026

1 study

senolytics

Clearing Out Aging Cells Made Stem Cell Repair Work Far Better in Mice

Old, worn-out cells (called senescent cells) seem to block the body's natural repair work.

Journal of translational medicine·Preliminary·Jun 8, 2026

Jun 1–7, 2026

2 studies

calcium

How a Cellular Calcium Glitch Speeds Up Aging in Mice

When cells lose control of their calcium balance, it sets off a chain reaction that triggers DNA damage and inflammation tied to aging.

Nature communications·Moderate·Jun 6, 2026

muscle strength

Weak Grip Strength Linked to Higher Risk of Pneumonia and Sepsis

In over 400,000 UK adults, weaker handgrip strength was tied to higher rates of pneumonia, UTIs, skin infections, and sepsis.

Archives of gerontology and geriatrics·Strong·Jun 1, 2026

May 25–31, 2026

2 studies

physical activity

Fitness Apps and Wearables May Boost Steps in Older Adults

Looking at 26 trials with over 4,000 older adults, digital tools like wearables and apps helped people walk about 800 more steps per day…

Journal of medical Internet research·Moderate·May 29, 2026

omega-3

Why Omega-3s May Help Aging Kidneys: It Comes Down to One Receptor

Scientists found that omega-3 fatty acids slowed kidney aging and fibrosis in mice, but only when a specific receptor called FFAR4 was…

Aging cell·Preliminary·May 25, 2026

May 18–24, 2026

2 studies

vitamin D

Most Older and Darker-Skinned Adults in Northern Britain Are Low on Vitamin D, Even in Summer

Researchers screened older adults and people with darker skin tones in northern Britain for vitamin D levels across the year.

European journal of clinical nutrition·Moderate·May 19, 2026

exercise

Why Higher-Intensity Workouts May Protect Fitness Better as You Age

Older adults aged 70 to 77 who did high-intensity training held onto their aerobic fitness much better over 5 years than those doing…

Medicine and science in sports and exercise·Moderate·May 18, 2026

May 11–17, 2026

1 study

NAD+

Blood NAD+ Levels Stay Flat With Age, Challenging Popular Aging Theory

One of the most repeated ideas in longevity is that NAD+ declines as we age, a story that helped make NR and NMN household names in the…

Nature metabolism·Strong·May 14, 2026

Apr 6–12, 2026

1 study

cognition

Eating More Fruits, Fish, Nuts, and Dairy Tied to Slower Cognitive Decline

In over 3,000 Chinese older adults tracked for about five years, those who ate more from six protective food groups (fruits, vegetables…

NPJ science of food·Moderate·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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