NAC may lower chances for heart problems
Chronic inflammation, including elevated homocysteine levels, raises chances for heart disease. Earlier studies found B-vitamins can lower some inflammation factors, but not others. N-acetylcysteine (NAC) is an antioxidant earlier studies found lowered homocysteine, and possibly blood pressure.

In this study, researchers reviewed two NAC studies, one with 40 men with elevated lipid levels, and the other with 42 men with normal lipids. Both studies included smokers and non-smokers. The dose was 1,800 mg of NAC per day, or a placebo, for four weeks. Homocysteine levels decreased by 4.1 percent in the placebo groups and by 11.7 percent for those taking NAC, regardless of lipid levels or smoking. While blood pressure did not change in the placebo groups, systolic blood pressure decreased significantly in all NAC groups. Diastolic blood pressure decreased in men with elevated lipid levels who took NAC, but not in men with normal lipids.

Reference: American Journal of Clinical Nutrition; October, 2015, Published Online.
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