By now you have probably heard about it The HCG Diet, an extreme diet that involves injections of HCG (human chorionic gonadotropin). HCG is the hormone women make when they are pregnant. Previously, the HCG Diet was defined by a 500 calorie diet paired with daily injections of HCG. Weight loss is a concern faced by a lot of people. This issue has been bothering millions of people all around the world each day. Science then has something to offer when it comes to achieving weight loss naturally.