"Turkish researchers looked at 62 people in their mid-20s with no evidence of coronary artery disease."

"Twenty of the study volunteers had smoked "light" cigarettes (8 milligrams tar, 0.6 milligrams nicotine, and 9 milligrams carbon monoxide) for at least three years, while 20 others had smoked regular cigarettes (12 milligrams tar, 0.9 milligrams nicotine, and 12 milligrams carbon monoxide) for the same length of time. The remainder of the volunteers were non-smokers."

"Researchers at Baskent University used coronary flow velocity response (CFVR) -- a measure of how readily coronary arteries can dilate in response to increased blood flow -- to assess the cardiovascular health of all the volunteers."

"Both groups of smokers were tested two days before and
... read the whole article