At the recent annual meeting of the American Urological Association in Orlando, national experts reached a consensus that the male hormone is a form of cholesterol. Studies have shown that male hormones are a form of cholesterol; that older men with PSA (prostate-specific antigen) levels less than 3 have a minimal risk of dying from prostate cancer and do not need to be screened for prostate cancer every year; and that decreasing cholesterol levels lead to a decrease in PSA levels in the blood, and as PSA levels increase, the risk of prostate cancer increases. The main methods to reduce cholesterol levels are: regular physical examination, physical exercise, regular life, work and rest, balanced diet, and taking lipid-lowering drugs. PSA is a large molecule glycogen produced by prostate epithelial cells, which is recognized as a marker of prostate cancer by experts at home and abroad and has been widely used in the diagnosis, clinical staging and postoperative monitoring of prostate cancer. The PSA test is applicable in most cases as an initial screening indicator. However, since this test can be influenced by many factors (such as the operation during examination of the prostate, the volume and inflammation of the prostate, the season, etc.), when the PSA value increases, it does not necessarily indicate prostate cancer; when the PSA value is low, but a hard nodule is found in the prostate on finger examination, it still cannot negate the possibility of prostate cancer and further examination is needed.