Is it dangerous for a man to have a total cholesterol number of 198?

Depends on other. Factors. A total cholesterol of 198 is not dangerous in itself. But any lab value needs to be interpreted in the total clinical context. What is your hdl, lipids, ldl, what is the family history of cardiovascular disease? Please note that half the heart attacks occur in people with normal cholesterol. It is still important to exercise, control your weight and maintain a healthy diet. See md.