Coronary heart disease is due to

Coronary artery disease is often referred to as:

Give scientific reasons:
$(1)$ Plaque stimulates/causes the formation of a blood clot on the wall of an artery.
$(2)$ Blood pressure and smoking have a direct relation with obesity.

Chest pain due to inadequate oxygen supply to the heart muscle is called:

The deposition of calcium,fat,cholesterol,and fibrous tissues in the lumen of arteries causes:

Hypochromic or macrocytic anaemia is due to