what is air that has been contaminated by tobacco smoke You Need to Know about Secondhand Pollution air that has been contaminated

From a medical perspective, the exposure itself, even when it seems marginal, activates biological mechanisms that do not distinguish between light and heavy smoking

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Preventing and treating CHD The risk of developing CHD is increased by: inheriting particular alleles of genes eating a diet rich in saturated fats and cholesterol not taking sufficient exercise being obese smoking Severe CHD can be treated with a coronary bypass, in which a piece of blood vessel is taken from another part of the body and sewn into place to provide an alternative route for oxygenated blood to flow from the aorta to the heart muscle

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