Notions of internal cleansing had resurgence along with the rise of alternative medicine in the 1970s and following; it remains unscientific and anachronistic. With the rise of the environmentalist movement, many detox diets use the diet format as a political platform to advocate for environmental ideas about pollution and toxic contamination. Finally, keep in mind that fad diets aren't a good long-term solution. For lasting results, your best bet is to eat a healthy diet based on fruits Dr Juan Rivera Keto , whole grains, and lean sources of protein. Detoxification diets are popular, but there is little evidence that they eliminate toxins from your body. Additionally, no fruit is off-limits once you've completed the 31 days. "You can have a sandwich in week four, which just makes things easier," Alpert said. Week four is the home stretch, when you can enjoy two starches per day, including bread and rice, in addition to high-fiber crackers. For week three, you can add grains such as barley, quinoa and oatmeal, and even some more fruit including grapes and clementines. You can also have another glass of red wine during the week and an ounce of dark chocolate each day.