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1. Once a person starts taking drugs or alcohol it is difficult to get rid of the habit. Why ?
 
The drugs' addictive potential pulls the abuser into a vicious cycle of . Moreover, some drugs act on the , altering behaviour, consciousness, thinking power, and perception.
  
2. Men addicted to tobacco lead to oxygen deficiency in their body. What could be the possible reason?
 
 
Tobacco smoke contains  that binds to haemoglobin. It leads to a  in the ,which causes  in the body tissues. 
 
3. Name any three foods that are to be avoided and included in the diet of a diabetic patient. Why should it be followed?
 
a. Diabetic patients should avoid
 
b. The diabetic patients should include a