Nowadays, we always hear about carcinogens in our daily life. Some people always say that some certain objects contain carcinogens which can seriously endanger our life and cause various cancers. Many people are rather worried about these so-called "carcinogens". However, many so-called "carcinogens" are just contained in the articles for daily use. Are these compositions really dangerous? Three kinds of so-called "carcinogens" will be explained here to help people know well about them. 

The first rumor of carcinogen is that the repeated use of the bottle of mineral spring water can cause cancer. A 12-year-old girl in United Arab Emirates gets cancer when she uses the same bottle of mineral spring water continuously for 16 months. Some people think that the plastic materials of the bottle cause the cancer. However, according to the experts, the materials of the bottle are organic high polymer materials, and they are rather stable in normal circumstances. Toxic substances can not be let off in everyday life. Therefore, the probability of repeated use of the bottle is nearly inexistent. However, some bottles are made of unqualified materials. Under the circumstances of high temperature and acidity, they can let off some chemical substances. People should reduce the times of using these bottles.

The second rumor of carcinogen is that disposable paper cups can cause cancer. The overproof fluorescer contained in paper cups can endanger the human health. Fluorescer can enter the human body and reduce the human immunity and even cause cancer. However, the experts say that only the long-term use of disposable paper cups containing excessive fluorescer can cause cancer. The formation of cancer will never be finished within a short period. Nowadays, the index of the raw materials of paper cups is qualified. There is no need for people to worry about the super-standard of fluorescer.

The third rumor of carcinogen is that shampoo can cause cancer. Some people think that shampoo contains harmful dioxane which can cause cancer. In fact, the low amount of chemical substances will not seriously hurt the human body. When people buy shampoo, they should know clear about the contents of various compositions. And people should not use too much shampoo when they wash hair.

The factors of the formation of cancer are diverse, including physical factor, chemical factor, environmental factor, dietary factor and so on. In order to prevent the cancer, people should form good life habits and conduct physical examination regularly.