Bill Clinton is just one of many celebrities who swear by veganism. After a quadruple bypass, the former president decided to makeover his entire lifestyle, and that includes his diet. The former omnivore now says he's making an effort to completely cut out eggs, dairy, meat and oils.

While vegan diets aren't necessarily always healthy, Clinton says he feels great. "All my blood tests are good, and my vital signs are good, and I feel good, and I also have, believe it or not, more energy," he told The L.A. Times.

He's not the only celebrity who's adopted a vegan lifestyle. His own daughter, Chelsea Clinton, served a vegan menu at her recent wedding, and stars such as Alicia Silverstone, Emily Deschanel, Natalie Portman and Ellen DeGeneres are all self-proclaimed vegans.

Check out which other celebrities swear by veganism to keep themselves healthy, fit and energized!