Smoking of cigarettes and bidis adversely affects the process of digestion.
It causes a burning sensation in the throat and cough.
Excessive smoking causes instability and trembling of fingers.
It causes dry cough which leads to sleeplessness.
Tobacco consumption can lead to shortening of life span, chronic bronchitis, pericarditis, cancer of the lungs, mouth, larynx (voice box), pharynx, urinary bladder, lips or tongue.
The nicotine present in tobacco affects the central and peripheral nervous system. Arteries become hard i.e. it causes arteriosclerosis and hypertension.