Stay away from farm raised meats and dairy as much as possible. These animals, unless organically grown, are given estrogen shots to fatten them up. Some of this estrogen is still in the meat when the animal is killed, and some is passed in to the milk. The body only requires about 3 ounces of protein daily, so it is not hard to meet your protein needs if you avoid meat. If you still want to eat meat I would suggest fish, and limited amounts of skinless chicken.
Vegetables are a good choice and are a good source of nutrients and fiber.
Not only is this substance toxic, but it causes weight gain by stimulating the appetite. For those who think they are doing themselves a favor by using Equal to avoid sugar, read the ingredients on the package. The first two ingredients on a package of Equal are maltodextrin and dextrose, both sugars. To control the appetite I would suggest garcinia gamboge, which controls the appetite and helps prevent the conversion of carbohydrates in to fat. It works by causing a release of tryptophan in the brain which forms in to serotonin to control the appetite.