Healthy-diet blood patterns linked to lower odds of eye disease
Blood signatures of four healthy diets were linked to 12% to 16% lower odds of age-related macular degeneration per standard-deviation increase.
Our read
Populations- Studied:
- Cross-sectional study of 504 participants assessed for age-related macular degeneration
- What changed:
- Eye disease odds were 12% to 16% lower per standard-deviation increase in healthy-diet blood signatures
- The catch:
- The blood patterns could follow eye disease rather than precede it
- Why it’s aging research:
- A leading disease of aging, its risks or menopause.
Editor of record: Boris Djordjevic · AgingResearch.News
The 504 participants contributed 1,008 eyes to a cross-sectional study of diet-related chemical patterns and age-related macular degeneration, an eye disease affecting central vision. Researchers measured small molecules in blood and urine. They assessed eight previously defined chemical signatures reflecting eating patterns and the body’s response to them.
Blood signatures of four healthy diets were associated with 12% to 16% lower odds of the disease per standard-deviation increase—a statistical step based on how widely scores varied. They were also linked to less severe structural changes in the eye. For the same increase, a blood signature reflecting an unhealthy plant-based diet was associated with 13% higher odds and greater severity.
Why it matters
Diet-related metabolism offers a way to investigate how eating patterns relate to eye health in later life. The authors called for studies that follow people over time to validate the associations.
Caveats
Measurements taken at one time could not show whether the chemical patterns preceded the eye disease. The study did not test whether changing diet reduced disease odds or severity.
- Unhealthy plant-based diet
- Plant-based diet
- Alternate healthy eating index-2010
- Age-related macular degeneration
- AHEI-2010 metabolomic signature
- Humans
The paper
Harvard Medical School
Investigative Ophthalmology & Visual Science, Nov 2, 2026
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