Research Library
Peer-reviewed papers from top journals, summarized and graded by evidence strength. Updated Mon, Wed & Fri.
2 papers added this week323 in the library
| Study | Evidence | Type | n | Journal | Date |
|---|---|---|---|---|---|
| Apr 27 – May 3, 20261 study | |||||
| Polyphenols: Lab Doses Far Exceed What Reaches the BloodPolyphenols are plant compounds found in fruit, vegetables and tea. | Preliminary | Journal Article | — | International journal of molecular sciences | |
| Mar 16–22, 20262 studies | |||||
| Undernourished Older Adults More Often Saw Rapid Mental DeclineAmong older adults in Italy whose thinking skills dropped especially fast over nine years, more than one in four were undernourished at the… | Preliminary | Journal Article | 3,852 | Nutrition (Burbank, Los Angeles County, Calif.) | |
| Too Much Fructose: Review Traces Harm Across Many OrgansFructose, the sugar found in sweet foods, is more than a source of calories, according to this review. | Preliminary | Journal Article | — | Frontiers in bioscience (Elite edition) | |
Apr 27 – May 3, 2026
1 studyMar 16–22, 2026
2 studiesDisclaimer: 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 Cities 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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