2. What are the dangers of mainstream, second hand and third hand smoke
Answers 1
Mainstream smoke contains nicotine and many harmful, cancer-causing chemicals. Inhaling mainstream smoke increases the risk of lung cancer and may increase the risk of other types of cancer. Research has clearly shown that secondhand smoke causes many health problems, including cancer, heart disease and respiratory illness. The effects from long-term exposure to the toxins in thirdhand smoke are not as well studied.
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