Research Digest
Research Library
Peer-reviewed papers from top journals, summarized and graded by evidence strength. Updated Mon, Wed & Fri.
May 17–23, 2026
2 studiesAstaxanthin May Protect Aging Brains and Livers by Calming Oxidative Stress
In rats given a chemical that speeds up aging, astaxanthin (the red pigment in salmon and shrimp) reduced damage to the brain and liver. It worked about as well as vitamin E and improved memory in the water maze test. The benefits disappeared when researchers blocked a specific antioxidant pathway, confirming how it works.
Vitamin D and Vitamin E May Boost a Weakening Immune System in Older Adults
As we age, our immune system gets sluggish and inflammation creeps up. Looking at nine trials, researchers found that vitamin and mineral supplements modestly improved immune function in older adults. Vitamin D lowered inflammation and raised immune cell activity, while vitamin E had the biggest effect on cell-based defenses. The overall boost was real but small.
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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