HCG and weight loss

What is HCG? Human chorionic gonadotropin or human chorionic gonadotrophin is a hormone produced in pregnancy. This is what I know. Only recently have I heard of HCG injections Austin. Oh, wow! I didn't know that it also helps reduce cravings therefore helping us lose weight if we go try the HCG diet. I wonder if it's safe? Will my Ob-gyne approve this?