Oprah's 21-Day Cleanse
A vegan diet excludes meat, fish, eggs, and dairy food. For her cleanse, Oprah is also shunning caffeine, sugar, alcohol, and products made with gluten. I believe she's also cutting the fat.
Why go vegan? In an earlier post (Vegan Diet Outshines ADA Diet), I wrote about a study which found:
" ... that people with diabetes who followed a low-fat, vegan diet saw improvements in HbA1c, body weight, BMI, waist circumference, total cholesterol, and LDL cholesterol that were significantly greater than improvements in a group following an ADA diet (which adhered to American Diabetes Association guidelines)."