On the HCG diet salmon is not allowed because it is considered to be an “oily fish”. The HCG diet is all about limiting the amount of calories you take in on a regular basis and salmon is fairly high in calories. Some of the other similar foods that are not allowed on this diet include herring, tuna, eel, and pickled fish.

Those who are on this diet will also want to keep in mind that it stresses its followers to weigh their food before eating it to make sure that it is 100 grams exactly. By not weighing your food before consumption you may be inaccurately guessing at portion sizes which are very important in this diet where calories matter more than anything else.