Experts warned: excessive intake of vitamin may Cuai

Some people think that eat vitamin tablets, we can prevent cancer, improve health. However, experts have warned: Some of excessive vitamin intake, it will trigger cancer, caused by accidental injury. Fudan University School of Public Health Professor Shun-Zhang Yu said that in the past 20 years, Chinese and foreign scientists to do a lot of tests, get a lot of unexpected results. For example, the eyes of the people "guardian of health" - β carotene, it might trigger some cancers. Scientists in Finland to 28,000 smokers for eight consecutive years in taking a certain dose of β carotene and vitamin E preparations found that the incidence of lung cancer among the contrary, an increase of 8 percent, heart disease increased by 11 percent, an increase of 20 percent of cataract . The United States against a smoking crowd of scientific experiments also showed that the long-term use more β carotene and vitamin A preparations, anti-lung cancer incidence rate will rise 28 percent. The epidemiological survey found that people will be added β carotene increase in the risk of lung cancer, but the food composition of β carotene able to reduce lung cancer and gastric cancer risk. Shun-Zhang Yu said that vitamin supplements or in the best doctors under the guidance of the "missing span-span."