Although smoking is best known for causing lung cancer, this habit is also among the biggest threats to your skin. Next to sun and chemicals, tobacco is one of the major accelerators of your skin natural aging process, and it is thought to be one of the fastest acting threats. Young people start showing signs of early skin aging after as little as 10 years of smoking. If you think this is a long period of time, you should keep in mind that many young people start smoking in their teen years (16-19 year olds) and are still below 30 when the first signs appear.
Smoking causes the narrowing of blood vessels throughout your body, including those that supply the outermost layers of the skin with oxygen and nutrients. Thus, your skin is slowly starved of vital oxygen and other substances, such as immunity-boosting Vitamin A. Alcohol has a similar effect by destroying the body supply of Vitamin A. This will lower the role of skin as the first line of defense against bacteria and infections.
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