Detox diets claim to "cleanse" your system of toxins, but your liver, kidneys and intestine already do that for you. Detox diets typically involve fasting followed by a strict diet. Frequent fasting or fasting for more than a few days may cause unhealthy side effects such as headaches, dehydration, low blood pressure or an irregular heartbeat. Some detox diets include intestine-clearing supplements that might actually be harmful.
Think of it this way: your body contains both good bacteria and bad bacteria. If you take substances that "cleanse" you, it likely causes something close to diarrhea in order to wash you out. The problem is that with washing out the bad, you will also be washing out the good, leaving a window of opportunity for the bad bugs to take over if they start to out number the good bugs. This can result in even more problems than you had before!
Your best bet to keep your body healthy is to eat a daily diet based on Canada’s Food Guide.