Question

heart disease is frequently related to high levels of
endorphins
platelets
estrogen
cholesterol

Explanation:

To determine the correct answer, we analyze the relationship between heart disease and the given options:

• Endorphins are related to pain relief and mood, not heart disease causation.
• Platelets are involved in blood clotting; while abnormal platelet function can be a factor, high platelet levels alone aren't the primary link to heart disease.
• Estrogen has complex effects on the heart, but high estrogen levels aren't a common primary association with heart disease.
• High cholesterol (especially LDL cholesterol) is a well - established risk factor for heart disease as it can lead to atherosclerosis (plaque buildup in arteries), which increases the risk of heart - related issues.

Answer:

D. cholesterol