While identical twins share a significant amount of DNA, their dietary choices can lead to very different health outcomes for them.

In March 2022, 22 sets of identical adult twins participated in a randomized clinical trial in which one twin adopted a vegan (fully plant-based) diet — and the other ate an omnivorous (meat-eating) diet.

The findings, published in JAMA Network Open on Nov. 30, 2023, showed that the twins who consumed a healthy vegan diet had “significantly improved low-density lipoprotein cholesterol concentration, fasting insulin level and weight loss” — compared to the twins who ate diets containing meat.

“Your diet needs to work for you and your lifestyle for your whole life, not only eight weeks,” Frierich noted. 

“Following a vegan diet in this study has been linked with better cardiovascular health, but a completely vegan diet may not be the right answer for everyone.”

For more Health articles, visit www.foxnews.com/health.

Melissa Rudy is health editor and a member of the lifestyle team at Fox News Digital.