Positive Effect on Blood Fats

Resveratrol supplements may alter blood fats in a beneficial way, according to much research conducted on animals. In a 2016 research, mice were given resveratrol pills in addition to a high-protein, high-polyunsaturated-fat diet. The mice's body weight and average total cholesterol levels reduced, but their levels of "good" HDL cholesterol rose.

By lessening the impact of an enzyme that regulates cholesterol formation, resveratrol appears to affect cholesterol levels. It may lessen the oxidation of "bad" LDL cholesterol due to its antioxidant properties. Plaque accumulation in arterial walls is caused in part by LDL oxidation. Participants in one research received grape extract that had been supplemented with more resveratrol. Compared to patients who took an unenriched grape extract or a placebo, their LDL had decreased by 4.5 percent and their oxidized LDL had decreased by 20 percent after six months of therapy.