How does HCG work in males and what are its effects on the male reproductive system?

Human chorionic gonadotropin (HCG) works in males by mimicking the hormone LH, which stimulates the testes to produce testosterone. This can help increase sperm production and maintain normal testosterone levels. However, excessive use of HCG can disrupt the natural hormone balance in the body and potentially lead to negative effects on the male reproductive system, such as testicular shrinkage and infertility.