Research Library

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

Aug 31 – Sep 6, 2026

1 study

epigenetic clocks

Epigenetic Clocks Predicted Who Lived to 90, But Not Who Stayed Sharp

Epigenetic clocks are sold as a readout of how fast you're aging.

The journals of gerontology. Series A, Biological sciences and medical sciences·Moderate·Sep 1, 2026

Aug 10–16, 2026

1 study

creatine

Creatine Built Muscle in Midlife Adults Even Without a Single Workout

Adults aged 45 to 65 took 10 grams of creatine daily for 12 weeks, either alone or alongside exercise and a weight-loss diet.

Journal of the International Society of Sports Nutrition·Moderate·Aug 11, 2026

Jul 20–26, 2026

1 study

cognition

Some Supplements May Nudge Memory Scores in People With Alzheimer's

Researchers pooled dozens of trials to see which supplements help thinking in people with Alzheimer's or mild memory loss.

Nutritional neuroscience·Moderate·Jul 23, 2026

Jul 13–19, 2026

1 study

cognition

Diets Rich in Antioxidant Vitamins Tied to Sharper Minds in Older Adults

Older adults who ate more antioxidant nutrients had far lower odds of cognitive trouble.

Medicine·Preliminary·Jul 17, 2026

Jun 29 – Jul 5, 2026

2 studies

curcumin

Curcumin May Sharpen Memory and Attention, Especially in Older Adults

Curcumin, the yellow compound in turmeric, keeps showing up in brain research for its anti-inflammatory effects.

Current pharmaceutical design·Moderate·Jul 3, 2026

nicotinamide riboside

NAD+ Booster Raised Cellular Fuel But Didn't Improve Memory in 12 Weeks

Nicotinamide riboside, a popular NAD+ supplement, doubled NAD+ levels in older adults with mild memory problems.

Alzheimer's & dementia : the journal of the Alzheimer's Association·Moderate·Jul 1, 2026

Jun 22–28, 2026

2 studies

exercise

Aerobic Exercise May Sharpen the Aging Brain, Especially with Multitasking

Older adults who did aerobic exercise saw better thinking, memory, attention, and balance.

Frontiers in aging neuroscience·Moderate·Jun 25, 2026

dementia

Exercise Beats Brain Games for Protecting Aging Minds, Review Finds

Researchers looked at trials in poorer countries for people with early memory problems.

BMJ global health·Moderate·Jun 22, 2026

Jun 8–14, 2026

1 study

vitamin C

Higher Vitamin C in the Blood Is Linked to Healthier Brain Structure

In older adults, people with more vitamin C in their blood tended to have more gray matter and better connections in a key brain network.

PloS one·Moderate·Jun 10, 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 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.

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