A) alcoholism
B) smoking
C) drug addiction
D) epilepsy
Correct Answer: A
Solution :
Alcoholism is addiction to alcohol (ethyl alcohol/ethanol). Tunnel vision is associated with alcoholism. In this, power of accomodation is affected. Accomodation becomes low and vision field decreases. Smoking or chewing of tobacco is harmful because of heat, irritation to lips, throut, respiratory tract. Nicotine is addictive toxic chemical that operates through increased production of dopamine. Its regular intake through tabacco leads to arteriosclerosis, atherosclerosis, coronary disease, coronay artery and heart failure. Drug addiction or habit forming drugs are those chemical substances, which on consumption modify biological, psychological or social behaviour of the user through enhancing, inhibiting or distorting function of body and mind. It is considered mark of disgrase. A drug addict often falls in the trap of antisocial element and lack of sincerity on the part of work, friends and relations.
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