Tolerance occurs the first time you use a drug. true or false

After so long a persons body will just adjust to the chemical. It is like drinking coffee. The first time we drink a cup we feel wired and after few years 1 cup is just not enough.

Smoking damages the respiratory system by inhalation of a foreign substance, that is absorbed and residue is left behind on our lungs sponge like substance. the gas that is inhaled also increase your blood pressure and dilates your blood vessels. also the process of inhaling and exhaling the smoke it causes irritation to the throat and mouth. smoking can cause lung cancer and other respiratory and circulatory diseases.