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Human Health and Diseases — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYHuman Health and Diseases3 Marks
Question
Why is smoking a bad habit?
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Answer

  1. Smoking involves inhaling the cigarette smoke which contains nicotine and other toxic substances like N-nitrosodimethlene. There is some amount of carbon monoxide.
    All these substances affect the normal respiratory health.
  2. Smoking invites problems like asthma, hypertension, heart disease, stroke, lung damage.
  3. The worst impact is that these substances are carcinogenic and hence can cause cancer of larynx, trachea, lung, etc.
  4. Smoking not only affects the smokers but also has bad effect on others due to passive smokers.
  5. In women, smoking is still hazardous as their ovaries can undergo mutations due to mutagenic chemicals found in smoke.
  6. Therefore, smoking is a very bad habit.

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