A glass of red may keep arteries loose

Wine dissolves behavioral inhibitions, but a biochemical inhibition may underlie some of red wine’s benefits to the heart.

Moderate intake of alcoholic beverages reduces a person’s risk of heart disease. Some studies have suggested that red wine has an added benefit. If true, what makes reds special?

A clue comes from endothelin-1 (ET-1), a chemical produced by cells in the walls of blood vessels.