“We have just been doing some calculations looking at the question of how much could we reduce mortality [by] shifting toward a healthy, more plant-based diet — not necessarily totally vegan — and our estimates are [that] about one-third of early deaths could be prevented,” Dr. Walter Willett, professor of epidemiology and nutrition at Harvard Medical School, said during a medical conference in Vatican City late last month.
Massive amounts of research all points to the same fact: a vegetarian diet is tightly linked to a lower risk of heart disease, high blood pressure, obesity, cancer, and chronic diseases.