The appearance of haze weather will heavily affect various aspects of life of people and the most serious harm is to human health. Next let me keep you informed of the following details as much as i can.

First of all, induce respiratory diseases. The composition of haze is quite complex and several hundred kinds of particulate matters form haze as well as these particulate matters will enter into respiratory tract through the breath of people and cause trachitis, asthma and so on respiratory diseases.

Secondly, cause cardiovascular and cerebrovascular diseases. The air oxygen content is low in hazy weather and this will make heartbeat accelerated and people will have chest distress, shortness of breath and so on symptoms, especially harmful to the older.

Thirdly, cause various bacterial diseases. The sunlight can not reach the ground in hazy weather or the sunlight is weak at that time, so bacteria, virus and microorganism on the ground surface will quickly breed and cause allergy and so on diseases.

Fourthly, rise the risk of having cancer. It is well known that the rate of having lung cancer for these people who smoke is 60% higher than that of common people. Besides, plenty of hazardous particulate matters are contained in the haze, so haze will easily cause cancer than smoking.

In addition to the all above points, there are also other harms of haze to human health worthy of attention, such as making people oppress and irritable, road accidents will easily happen and so on.