A Stanford Medicine-led trial of 22 pairs of identical twins comparing vegan and omnivore diets found that a vegan diet improves overall cardiovascular health in as little as 8 weeks. By studying identical twins, researchers were able to control for genetics, same households and similar lifestyles.

A Stanford Medicine-led trial of 22 pairs of identical twins comparing vegan and omnivore diets found that a vegan diet improves overall cardiovascular health in as little as 8 weeks. By studying identical twins, researchers were able to control for genetics, same households and similar lifestyles.