You are at increased risk for a heart attack if your good HDL is low or your bad LDL is high. You should not depend just on exercise to prevent a heart attack, because diet appears to be more important. Start an exercise program that you can do for 30 minutes at least 3 times a week. I'm Dr. Gabe Mirkin on Fitness. Kokkinos PF et al.
Miles run per week and high density lipoprotein cholesterol levels in healthy, middle-aged men.
Archives of Internal Medicine. Dr. Mirkin's opinions and the references cited are for information only, and are not intended to diagnose or prescribe. For your specific diagnosis and treatment, consult your doctor or health care provider.