How rare is it for an 18 year old to have a heart attack?

No, if your total cholesterol is less than 200 mg/dL, you generally do not need to worry too much about an increased risk of heart disease based on that cholesterol level alone. Here's a more detailed explanation: However, other factors also influence your overall heart disease risk, such as: ....

please get a blood test done for your son to rule out rheumatic heart disease.

The heartbeat or the pulse rate can be checked at the wrist. You have to place the index and middle fingers of one hand on the opposite wrist, just below the base of the thumb and slightly press it. When you feel your pulse, count the number of beats in 15 seconds. Multiply this number by four to ca....