Atherosclerosis, as all dietary diseases builds up and breaks down (cleanse) largely according to food, nutrients, to which there are only two: building and cleansing. Too much protein and fat, especially animal, in the extreme, tends to cause high cholesterol, plaque, atherosclerosis, arteriosclerosis, high blood pressure. Less animal protein and fat and moe fruits and vegetables cures, little by little. This is common sense.
All blood passes through the liver. The liver stores, cleanses (removes excess protein, fat, cholesterol, impurities) and releases the blood. It also produces bile (fat emulsifier), which is stored in the gall bladder (connected to liver) and later released via bile ducts into the small intestine.
The liver filters, removes and transforms excess protein and fat (lipids) into cholesterol and lipoproteins: high-density lipoproteins (HDL), low-density lipoproteins (LDL) and very low-density lipoproteins (VLDL). Lipoproteins regulate cholesterol. LDL and VLDL carry and harden cholesterol into plaque that binds to the walls of the arteries. HDL removes and transports cholesterol from the bloodstream to the liver, to be broken down, transformed into bile salts, and eventually eliminated through the bowels.
Saturated fat, commonly found in meat, eggs, cheese, etc. increases the number of LDL and VLDL. Unsaturated fatty acids commonly found in beans, nuts and seeds, increase the number of HDL. The balance of health favors an excess, of HDL. A certain amount of saturated fat, LDL and VLDL are required. Life is a balance of opposites. You need both to exist. Too much protein, fat, cholesterol tends to thicken, clog and overheat the liver.
Protein and fat (includes cholesterol) are thick, sticky, hard nutrients that are difficult to digest and eliminate. In excess (stage 1), they tend to weaken digestion (stage 2) and elimination (stage 3) while thickening and stagnating the blood (stage 4) before thickening, clogging and weakening the liver (stage 5). Less cholesterol, fat are removed more stays in the bloodstream (high cholesterol) and arteries (plaque, atherosclerosis, arteriosclerosis, high blood pressure). More blood flows into the liver (clogged, swollen) than out, disrupting and reducing overall circulation, blood flow, especially to the extremities: head, arms and legs, producing a variety of chi (energy) and blood deficiency symptoms (pain, dryness, inflammation, weakness, shaking, etc.)
What goes up must come down, if you know how to control your diet. Eat more fruits, vegetables, beans, nuts, seeds and dairy and less eggs, chicken and turkey. Reduce and or avoid all red meat, fried foods, alcohol and overeating.