Artery Blockage is the building up of plaque in the walls of the arteries leading to a reduction in the calibre of the vessel.

The narrowing builds up over several years where cholesterol, fat and the smooth muscle cells lining the blood vessels have been transformed into a thickened, and sometimes calcified, mass. This is one type of Qi obstruction in the body.

As the result the arteries become constricted, their elasticity disappears and the volume of blood flow is not smooth, one of the reason for limbs turning black in colour and severe dizziness.