Updated: April 27, 2012, 10:33 AM ET
NEW YORK -- Serena Williams says altering her diet in support of her big sister Venus hasn't been much of a hardship.
Serena said she's cut down on eating chicken and fish and is eating more raw foods, as does Venus, who adopted the change to help her body cope with Sjogren's syndrome, an autoimmune disease that can cause fatigue and joint pain.
Although the new diet has been a big change for Venus, Serena said it hasn't been that big a deal for her.
"I've always been a better eater than her, even though I'm a lot, lot thicker," she said, laughing during a recent phone interview.
Serena said since she lives with Venus, she is mindful to eat foods that won't tempt her sister.
"I don't want her to come home and see a piece of chicken and be like, 'Oh, I want it,' and she can't have it. It would be like a stumbling block for her," she added.
Both Serena and Venus have been back on the tennis court recently after dealing with health issues.
"I'm looking forward to playing, and just playing and being healthy; I haven't really been healthy in a few years, and I'm just really looking forward to having a chance to play," she said. "I think right now I am at 100 percent ... I'm really looking forward to continuing this and continuing to be healthy."
Besides her excitement for upcoming Grand Slams and the Olympics, Serena said she's also still focused on her side ventures, which include an upcoming appearance on the TV show "Drop Dead Diva;" her nails (she's a licensed manicurist and has a nail polish line); her clothing company, Aneres (she said it's relaunching online next year); and business school, just to name a few.
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Serena makes diet change to support Venus
