→Harmful effect caused by alcohol
(i) Liver cirrhosis
(ii) It leads to gastric ulcers & gastritis
(iii) In chronic alcoholism, the axon of the nerve inflame thus causing neuritis.
(iv) Permanent damage to liver cells occur due to deposition of fats (cirrhosis).
→Harmful effects caused by drug abuse are -
(i) Excessive doses of drugs may lead to coma & death due to respiratory failure, heart
(ii) Lack of interest in personal hygiene, withdrawal, isolation, depression, fatigue aggressive & rebellious behaviour etc.
(iii) It may cause serious infections like AIDS & hepatitis B, When someone takes drugs intravenously.
(iv) The adverse effects of drugs are manifested in the form of reckless behaviour, vandalism & violence.