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What Else is Aging You?

If you don't smoke but live or work in a smoke-filled environment, that's still going to age you. Spending just one hour in the presence of secondhand smoke is the equivalent of your smoking four cigarettes. Whether the smoke you're breathing is from your own cigarette or someone else's, it ages your arteries, increases your risk of heart and lung disease, weakens your immune system, and promotes cancer.

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