 | | 3 / 7 3. Smoking to stay thin
There are several reasons why people pick up this nasty habit, but an increasing number of young ladies are lighting up to stay thin, being swayed by celebrities and models who smoke. Supermodel Naomi Campbell, for one, once told a reporter, "I never diet. I smoke." While some evidence seem to suggest that smoking cigarettes causes an increase in metabolic rate and may also suppress appetite, the ill effects are far greater.
Why it's not worth it: For starters, lighting up ages your skin prematurely, makes your hair and breath smell, and your teeth and nails yellow -- not exactly prettifying. And there's the catastrophic health effects of smoking, which include lung cancer, heart disease, COPD/emphysem.
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