What is my prognosis in 10-20 years with high cholesterol?

Patient: I am a 20 year old, female with cholesterol tested around 270 (LDL at 200 and HDL at 70). I am relatively healthy, exercise 2-3X/week, don’t eat much fast or processed food. Both my parents have high cholesterol so it’s genetic. I just want to know what that puts me at risk at. Will I have a heart attack at 40 or will I be able to manage it with meds?

Symptoms: None