They're popular, but they aren't proven to do what they say they'll do: flush toxins out of your system. In fact, they may be risky and even backfire.
Still thinking about it? You should know this first.
What You Can Eat and What You Can't
That depends on the particular detox diet you're following. There are many of them. Some involve fasting, or just drinking liquids. Others allow some foods, like fruits and vegetables. They typically are short diets -- they're not a way of eating you can stick with in the long run.
Level of Effort: High
You'll be hungry and may feel weak. Whether or not a detox diet is safe depends on the plan and how long you stay on it.
If the idea of detoxing appeals, you might try "clean" eating that focuses on vegetables, fruits, whole grains, and lean protein -- basically, whole foods without a lot of processing. That's good for you and more likely to give you results that last, especially if you make exercise a habit.
Limitations: You're going to go without a lot of the foods you usually eat. Detox diets are typically very rigid and involve eating the same few things over and over.
Cooking and shopping: Depends on the detox plan you're following. Because there's not a lot you're allowed to eat, you won't have a long shopping list and prep work should be minimal.
Packaged foods or meals: Some detox plans recommend herbs, pills, powders, enemas, and other forms of colon cleansing. Methods vary and often include products that are only available from the author’s web site.
In-person meetings? No.
Exercise: Not required, and you may not have the energy for it, because you're not getting that many calories.
What Else You Should Know
Support: None, except for resources you may find online.