A glass of beetroot juice -- a source of dietary nitrate -- could dramatically lower as well as reduce heart attack risk a study has revealed. Dietary nitrate is a compound that dilates blood vessels to decrease blood pressure a leading factor for developing heart attack. The findings published in the Journal of Physiology - Heart and Circulatory Physiology showed that the supplement can reduce overstimulation of the sympathetic nervous system that occurs with heart disease and causes the heart to beat faster. The study found that acute nitrate supplementation using beetroot juice can decrease muscle sympathetic outflow at rest
