Tennis ace Venus Williams became a raw vegan after autoimmune disease diagnosis

Tennis star Venus Williams, who recently won the 2012 Wimbledon women's doubles title with her sister Serena, has been following a raw vegan diet since being diagnosed with Sjogren's syndrome last fall.

Sjogren's syndrome is an autoimmune disease that causes fatigue and joint pain and affects some 4 million Americans. There is no cure.

Venus, 32, dramatically overhauled her diet to deal with the chronic fatigue caused by her condition.

"Changing my diet has made a big difference," Williams told CBS News on July 9, 2012. "I'm not perfect, so I forgive myself when I make mistakes [with my vegan diet]. I do a lot of juicing as well, a lot of wheat grass shots...lots of fresh juices and things like that."
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