sweden crowns cigarettes crown - Famous Stock Photo Philip Morris bets on cigarette

In December 1992, the Environmental Protection Agency released its risk assessment, Respiratory Health Effects of Passive Smoking: Lung Cancer and Other Disorders , which classified secondhand smoke as a Class A carcinogen

When blood flow is compromised, the veins become weaker, and the risk of developing or worsening varicose veins increases

Approximately six weeks after the sore first appears, a person will enter the second stage of the disease

Inflammation of the blood vessels is a primary hallmark of atherosclerosis - the thickening of the vessel wall due to the buildup of plaques made up of fats, cholesterol and other substances - which can lead to heart attack

Raymakers AJN, Sadatsafavi M, Sin DD, et al