What Is the hCG Diet? Human chorionic gonadotropin (hCG) is a hormone your body normally makes. However, during pregnancy, the placenta makes hCG in large amounts. So, hCG is what pregnancy tests ...

(The research shows no evidence that HCG is an effective weight loss tool.) There is research to suggest that people who have a selenium deficiency — which is very rare in the U.S. — may have ...