82457acb1a What Causes High Cholesterol Levels in Children and Young Adults? In the past, doctors didn't worry that much about high cholesterol in younger people, but studies have shown that children and adolescents who have high cholesterol are more likely to develop heart disease as adults. High Cholesterol Risks in Pregnancy High cholesterol levels can cause some risks during pregnancy. An acceptable cholesterol level for a person between the ages 2 and 19 is less than 170 mg, according to the National Heart, Lung, and Blood Institute (NHLBI), yet statistics show that up to a third of young adults have high cholesterol levels above 200 mg. Limit time in front of the TV to two hours a day. It should not be used as a substitute for professional medical advice, diagnosis or treatment. See additional information. Heart attack - occurs when the supply of blood and oxygen to an area of heart muscle is blocked, usually by a clot in a coronary artery. According to the American Academy of Pediatrics, medications to lower high cholesterol in young people should be considered if they have very high levels of low-density lipoprotein (LDL) cholesterol. It is important for parents and young adults to know that there is a direct relationship between high cholesterol in young people and the risk of dying years later from a heart attack. Prior to the new guidelines, the NHLBI already recommended that children as young as age 2 have their cholesterol checked if they have a parent with high cholesterol or a family history of early heart disease.