Oprah Winfrey is going vegan for a 21-day detox plan, PEOPLE reports.

Oprah Winfrey on 21-day detox plan

"This 21-day cleanse gives me a chance to think about [eating] differently and see what my attachments are to certain kinds of foods – and what I'm willing to do to change," she wrote on Sunday (day one). "Don't know if I'm going to feel better or worse, but I'm willing to try to see if my body at least feels differently."

"I had been focused on what I had to give up – sugar, gluten, alcohol, meat, chicken, fish, eggs, cheese. 'What's left?' I thought," she wrote on day two. "Apparently a lot. I can honestly say every meal was a surprise and a delight, beginning with breakfast – strawberry rhubarb wheat-free crepes."