Chemical pollutants: secondhand smoke

Secondhand smoke contains over 4000 more substances, including 40 variety and cancer-related toxic substances.

In secondhand smoke, many compounds in Sidestream release rate often in higher than mainstream smoke. If the other non-smokers breathe in vivo may and radon decay products blend together on human health more damage.

In the vast majority of people in everyday life become passive smokers.

When smoking is hazardous to the health of smokers themselves, second-hand smoke also affects non-smokers. In addition to the stimulation of the eye, nose, and throat, it will significantly increase the non-smokers suffering from lung cancer and heart disease, as well as other such as respiratory diseases, etc., serious harm people's health.

According to studies, cigarette burning after smoke contains 4000 harmful substances, medical point of view can be divided into four categories:

1. carbon monoxide in cigarette smoke concentration of about 40 per 100 000, and red blood cell adhesion for oxygen and blood cell adhesion of about 210 times, so the carbon monoxide is inhalation of the human body, red blood cells to transport oxygen capacity will decrease, while the in vivo hypoxia.

Second, nicotine, it enters the body will have the following role after: limbs vasomotor, heartbeat, blood pressure increased, breathing becomes rapid, mental status change (become emotional stability or mental excitement), and the promotion of platelet aggregation, and this is causing cardiac vascular occlusion, hypertension, stroke, and other key partners in cardiovascular disease.

III, irritating substances, these substances not only on the eyes, nose and throat produce irritation, will stimulate the bronchial mucous glands secretion, under the lead to acute inflammation of the bronchial and chronic bronchitis.

IV. carcinogenic substances, except for recognized outside of carcinogenic nicotine, smoke contains more radioactive elements such as polonium that smoking is volatile, and with the smoke to be absorbed by the human body, in savings, constantly releasing α rays to damage the body's tissues and cells, causing damage to the human body immunity, to create the environment in cancer cell growth.

Needless to say, the above four categories of harmful substances for smokers and second-hand smoke inhalation are equally harmful.

(Editors: Luo Li-ping)