Do you want to detox without going on a crazy fad (which I would strongly advise them against anyhow!)? Let me suggest adopting a squeaky clean eating regimen for a couple of weeks to help push out whatever traces there are of unhealthy foods in the digestive tract, and reset the body.
And what does squeaky clean mean? I mean 1 cup plain cooked oatmeal with cinnamon, plus a boiled egg for breakfast, plain, broiled fish, chicken or turkey at lunch and dinner (6 oz cooked), and 2 cups of vegetables (preferably raw) at every meal. Also drink 8 glasses of water, 2 cups of green tea or coffee and 1 piece of fruit (preferably an apple or pear with skin) daily. That’s it!