HUMAN NUTRITION

Detailed explanation-1: -There is no safe level of exposure to secondhand smoke; even brief exposure can cause serious health problems. Secondhand smoke can cause coronary heart disease, stroke, and lung cancer in adults who do not smoke.

Detailed explanation-2: -It is also called environmental tobacco smoke, involuntary smoke, and passive smoke. More than 7, 000 chemicals have been identified in secondhand tobacco smoke.

Detailed explanation-3: -The smoke that is inhaled and then exhaled from the smoker’s lungs is called mainstream smoke (MS). Sidestream smoke (SS) is the smoke that enters the air directly from the burning end of a cigarette, cigar, or pipe.