It says fasting is a myth and it is useless, but it doesn't give a source to back up what it says and why it says it. The website claims there is no evidence that says fasting cleans out toxic in the blood.
But there is plenty of evidence. Medical Dr's wrote books on fasting and their benefits. Dr. Furhman is one Dr. who wrote a good book on fasting and the health benefits. The article on the website you told me to go to says this below:
Myth: Fasting eliminates toxins from the body.
While fasting for a day or two probably won't do any harm, and might be psychologically useful in slowing down bad eating habits, there's no evidence that it actually "cleans out" the body by eliminating toxic waste. Basically, your digestive system needs time off from doing its job no more than your heart needs "a rest."