Vitamin C Linked to Brain Health
Analysis based on 40 articles · First reported Jun 10, 2026 · Last updated Jul 14, 2026
The study's findings could increase demand for Vitamin D supplements and foods rich in Vitamin D, potentially benefiting companies in the pharmaceutical and food and beverage industries. However, the observational nature of the study means that any market impact will likely be moderate, as it does not prove a direct cause-and-effect relationship.
A study conducted by researchers at Hirosaki University in Japan, including Tomohiro Shintaku and Haruka Nagaya, and published in PLOS One on June 10, 2026, found a link between lower Vitamin D levels in blood plasma and reduced gray matter volume and weaker connectivity in the brain's default mode network in older adults. The observational study involved over 2,000 Japanese adults aged 64 and older. While the findings suggest that optimal Vitamin D levels could support cognitive function and counteract cognitive decline, the researchers emphasize that the study does not prove a cause-effect relationship. Experts like Dung Trinh, Lynette Gogol, and Anne Danahy have commented on the research, highlighting the need for further studies to explore the biological mechanisms and confirm the findings across diverse populations.
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