Explain why using tobacco in any form is injurious to health.

Explanation

Consumption of tobacco is injurious to health in following ways
(i) It can cause cancer of lungs, throat, urinary bladder and of oral cavity.
(ii) Emphysema, bronchitis and coronary heart diseases can be caused.
(iii) Gastric ulcers can occur.
(iv) Smoking tobacco increases carbon monoxide levels in the blood, which leads to oxygen deficiency in body.