A study published in PLOS ONE has identified an association between higher blood levels of vitamin C and healthier brain structure in older adults, according to researchers. The observational study, led by Tomohiro Shintaku of Hirosaki University, examined 2,044 participants in Hirosaki City, Japan, with an average age of 69. [7]
Researchers measured vitamin C concentrations from blood samples taken after an overnight fast, then used MRI scans to assess gray matter volume and structural connectivity of the default mode network, a brain system involved in memory and cognitive function. [5] The analysis adjusted for age, sex, smoking, diabetes, and other lifestyle variables. [6]
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