'Fasting for weight loss'. What the hell, how is this even published.

I was looking at various tips to assist in weight loss and the right way to go about it and i stumbled across an article promoting fasting to lose weight. Pretty sure the best way to lose weight is with exercise and appropriate eating habits. I am a little bit baffled that there is an article published promoting the use of fasting, won't that mean you miss out on all the nutrients that you require. The article is not even clear about how you are supposed to fast :| it proposes that a ten to thirty day fast can undo physical addiction to food and unbreak unhealthy eating habits as the first phase. Because of the lack of direction as to how to go about it, i am confused.