Plaque build up in the arteries

Answer by Jerry Crespi:

According to the American Heart Association, when the innermost wall of an artery, called the endothelium, is damaged by smoking, diabetes, high blood pressure or high cholesterol levels, waste such as calcium, platelets, fats and other cellular byproducts are allowed to build up inside the artery. This condition, known as atherosclerosis, restricts blood flow and can lead to heart attacks and other cardiac problems. Stopping smoking and controlling blood sugar levels, cholesterol and blood pressure, can help you maintain optimum arterial health and help prevent, or slow the progression of, dangerous calcium buildup.

Why would smoking induce the build up of plaque in the arteries?
The basic cause is that nicotine causes stored fat to be released into blood vessels. Some of this fat sticks to the artery walls.  Then a process called vascular generation actually grows new blood vessels to feed this new blockage in the arteries, making it worse.
This is one reason why nicotine in ANY form is bad.  The vapor cigarettes and nicotine gum are just another way of delivering poison to the body.
So that’s why I’ve heard too much eggplant is bad for you… (eggplant has nicotine). Therefore those with cardiovascular problems should avoid nightshades (those plants tend to have nicotine and similar substances like solanine).