(Credit: Stephane de Sakutin/AFP/Getty Images)

Bill Clinton's efforts to combat heart disease may be working.

When asked about her father's past health issues and his recent efforts to get healthy, Chelsea Clinton says Bill Clinton's heart may be the youngest it's been in a decade:

"He went to the doctor recently," Clinton said today during the web series, 'Mondays with Marlo.' "And his doctor told him that his heart today is much younger than it was even 10 years ago."

Since undergoing heart surgery in 2010, the former President, 67, has drastically changed his lifestyle - going vegan and losing more than 30-pounds in an effort to fight against his longtime struggle with heart disease.

"He's probably the world's most famous vegan," Chelsea said. "He walks four times a week diligently wherever he is in the world. And he's so determined to be an advocate for other men and men in particular to go to the doctors, as he did when he started to not feel well. And then to make the necessary changes in their life so hopefully they can live a long time."

Chelsea also added that her father's decision to get fit was made entirely on his own, and not out of pressure from his daughter or wife, former Secretary of State, Hillary Clinton.

"He didn't need my mom or me to pressure him to do that," she said. "I think having a quadruple bypass surgery was sufficiently sobering. And I am profoundly grateful that he really radically changed his life."