STANFORD: In a study conducted by Stanford University, the cardiovascular health benefits of a vegan diet were put to the test, showcasing rapid improvements when compared to an omnivore diet. Published in JAMA Network Open, the research employed an innovative approach by using identical twins to minimize variables, providing unique insights into the impact of dietary choices.
Dr. Christopher D. Gardner, the senior author of the study, highlighted the significance of the twin-based methodology, stating, “The idea of working with identical twins was fascinating to us. When randomizing identical twins to two study arms, the genetics are perfectly matched, and likely many other factors are matched because these pairs were raised in the same families, lived in the same neighborhoods, and many other similarities.”
The study involved 22 pairs of twins, with one twin adhering to a vegan diet and the other to an omnivore diet for a duration of eight weeks. Both diets emphasized the inclusion of vegetables, legumes, fruits, and whole grains while limiting added sugars and refined grains.
Heart Health Benefits of Vegan Diet
Surprisingly, the results indicated that the twin following a vegan diet experienced a 20% decrease in fasting insulin levels and, on average, lost 4.2 lbs more than their omnivore counterpart over the study period.
Dr. Gardner expressed surprise at the substantial differences observed, particularly considering the generally healthy participants in both groups. The findings underscore the swift and positive changes that a more plant-based diet can bring to cardiometabolic risk factors.
While acknowledging that not everyone may choose a vegan diet, medical experts emphasize that even minor adjustments can have positive impacts on cardiovascular health. Dr. Cheng-Han Chen, an interventional cardiologist, highlighted the heart-healthy components of a vegan diet, including fruits, vegetables, nuts, legumes, and whole grains.
Monique Richard, a registered dietitian nutritionist, encouraged practical steps for promoting cardiovascular well-being, such as increasing fruit and vegetable intake or exploring new vegan recipes.
