Jermin Defoe is 37 and still going strong. He became a vegan in 2017 and has credited it for helping him remain competitive.Getty Images
Nate Diaz is one of the biggest names in MMA and UFC. And he has been a vegan since the age of 18. Zuffa LLC
American Scott Jurek is one of the most dominant ultramarathoners in the world, with 16 major titles under his belt. He became a vegan while in college. AFP
Australia fast bowler Peter Siddle famously switched to a vegan diet in 2013. Ate 20 bananas a day, but that didn't quite translate to success on the field. Getty Images
Former world heavyweight champion David Haye said in 2016 that after going 'green', he is "fitter than I've ever been." Courtesy Special Olympics World Games Abu Dhabi
F1 driver Lewis Hamilton decided to go vegan in 2017 and invested in a plant-based restaurant in London as well. He recently said that going vegan "is the only way to truly save our planet". Getty Images
After getting diagnosed with Sjogren's syndrome in 2011, Venus Williams switched to a raw vegan diet to help her get back on the tennis court. However, she has now added potatoes, rice, and lentils to her diet. AP
India captain Virat Kohli became a vegetarian last year and said his views on diet have changed completely. AFP
Former NFL defensive end David Carter (71) became a vegan in 2014. He is now an activist who is known more as the '300-pound vegan'. Getty Images
Jermin Defoe is 37 and still going strong. He became a vegan in 2017 and has credited it for helping him remain competitive.Getty Images
Nate Diaz is one of the biggest names in MMA and UFC. And he has been a vegan since the age of 18. Zuffa LLC
American Scott Jurek is one of the most dominant ultramarathoners in the world, with 16 major titles under his belt. He became a vegan while in college. AFP
Australia fast bowler Peter Siddle famously switched to a vegan diet in 2013. Ate 20 bananas a day, but that didn't quite translate to success on the field. Getty Images
Former world heavyweight champion David Haye said in 2016 that after going 'green', he is "fitter than I've ever been." Courtesy Special Olympics World Games Abu Dhabi
F1 driver Lewis Hamilton decided to go vegan in 2017 and invested in a plant-based restaurant in London as well. He recently said that going vegan "is the only way to truly save our planet". Getty Images
After getting diagnosed with Sjogren's syndrome in 2011, Venus Williams switched to a raw vegan diet to help her get back on the tennis court. However, she has now added potatoes, rice, and lentils to her diet. AP
India captain Virat Kohli became a vegetarian last year and said his views on diet have changed completely. AFP
Former NFL defensive end David Carter (71) became a vegan in 2014. He is now an activist who is known more as the '300-pound vegan'. Getty Images
Jermin Defoe is 37 and still going strong. He became a vegan in 2017 and has credited it for helping him remain competitive.Getty Images
