Fat Loss Factor by Dr. Charles D.C. is an awesome diet program to check out. Most of the common mistakes regarding weight gain are discussed. The thing is, he has noted that your set of genes are not the only thing affecting weight. This is actually due to lifestyle
He said that people whose relatives are overweight can do something to lose weight. Genes might be a different matter because if they're the cause then nothing will work.
You should know what your food will be containing and that you must know how to read, look and understand your food labels and avoid additives, as suggested by Fat Loss Factor. And of course, Dr. Charles is one of the most avid promoters of avoiding high fructose syrup which he says is one of the reasons for weight gain. One thing to know is not to dwell only on physical aspects but also on the way you think.
It is because you can make someone think more about how to lose weight. The like below will explain more about how Fat Loss Factor works: http://tinyurl.com/qdqj6pl