What is the effect of supplementing raisins on improving cognitive performance, cardiovascular risk factors, and markers of inflammation? usal raisin cognition inflammation cadiovascular
By Tarun Sai LomteMar 31 2023Reviewed by Danielle Ellis, B.Sc. In a recent study published in BMC Geriatrics, researchers devised a protocol to examine the effect of raisin supplementation on cognitive function in older adults.
Neuroprotective benefits are observed with moderate intake of grape polyphenols. Raisins have a low insulin index and low/moderate glycemic index. A study reported lower blood pressure and higher satiety associated with 12 weeks of raisin consumption. Nonetheless, no study has examined the impact of raisin consumption on cognitive impairment in the elderly population.
The sample size will be 40 subjects in each group. The primary variable will be cognitive performance. Secondary variables will be quality of life, physical activity, blood pressure, body composition, heart rate, inflammatory markers, diet’s nutritional value, laboratory tests, and daily living activities.
The EuroQol 5-D questionnaire will be used to evaluate the health-related quality of life. The functional activity questionnaire will assess the ability to perform instrumental activities of daily living. Participants will maintain dietary records of foods/drinks consumed each day. Interleukin -1, IL-6, IL-10, tumor necrosis factor -α, and C-reactive protein levels in serum will be measured using the enzyme-linked immunosorbent assay .
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