I know that many swear by Dukan but, rather like Atkins in the old days, due to lack of understanding, this very strict way of low-carb, low-fat eating has prompted a lot of criticism. Dukan himself famously lost a recent court case (he sued a French nutritionist for so-called libel, and lost) and had to pay damages and costs.

Middleton diet slammed as experts compile list of worst weight loss plans | Mail Online

Most of the stuff in this article probably isn't new but it is certainly food for thought.