Scientific health care. Professor Lin Qingshun In recent days, some relatives and friends have been spreading a video about vitamin D, whether in Taiwan Province Province or the United States. It was a doctor in Taiwan Province province who said indignantly in a gossip health program that vitamin D is very important to the whole body, and there is no reason not to supplement it. Last week (20 17-7-7), I published "Prevention and Treatment of Cancer with Vitamin D". But judging from the click rate, the influence of my article is far less than that of that movie. However, this is no accident, because I know very well that it takes time, effort and persistence to change a deep-rooted habit or belief. So, in order to help you make a change, I'm going to tell a story about the confession of a famous doctor today. The famous doctor named Tim Spector is a professor at King's College London and the head of the department of genetic epidemiology. He has published more than 800 research papers, ranking among the top scientists in the world 1%. He also holds several top titles in the world. Interested readers can click on the website of King's College to view the doctor's profile. The doctor published "Vitamin D: Why I changed my view on this famous supplement" in the column of 20 1616. The following is my translation of the key points of this article: for decades, doctors, patients and the media have been fascinated by various vitamin D supplements. The endless headlines strongly praised their magical ability to reduce various diseases. Medical experts, including myself, have been urging patients to take supplements for decades. I have taken vitamin D myself and recommend it to my family. However, on 20 13, my views on supplements have changed greatly. I knew that I had made a mistake. That year, in order to write a book called Diet Myth, I began to collect and study relevant materials. (Note: This book has been published now) From these materials, I am very surprised to find that almost all vitamin supplements lack scientific basis. Their popularity is attributed to the promotion of business groups and stars. Current scientific evidence shows that vitamin supplements may be harmful rather than beneficial. For example, a large clinical trial found that vitamin E supplements actually increased prostate cancer. A very large analytical study (27 clinical trials with 500,000 patients) found that vitamin supplements were completely ineffective in preventing cancer or heart disease. It doesn't matter. Even more surprising, excessive intake of supplements will increase the risk of cancer and heart disease and promote premature death. Even in the aspect of bone protection, two large-scale clinical studies have found that large doses of vitamin D can greatly increase (20% to 30%) the risk of fracture. Since 1980, many researchers, including myself, have written thousands of papers, blaming the disease of 137 on vitamin deficiency. However, a report of 20 14 found that these correlations were hypocritical. The current evidence is that the so-called vitamin D is too low and has little to do with health. Even if it is related, it is disease that will lead to low vitamin D, not low vitamin D that will lead to disease. As for why taking supplements is harmful, the current evidence is that excessive vitamins will interfere with our intestinal bacteria and immune system. My favorite vitamin proved to be dangerous, which was really a wake-up call. We should recognize the abuse of these chemicals all over the world, instead of routinely adding them to food. The billions of dollars we waste on these products should be used for proper medical care. People should be educated that 99% of people can get all the vitamins they need for health as long as they bask in the sun and eat diversified real foods. About the author: Scientific health care, hosted by Lin Qingshun, a professor (now retired) at the University of California, San Francisco. He has 40 years of medical research experience, published nearly 200 research papers, and served as a member of the jury of more than 60 world-renowned medical journals. From the perspective of medical research, articles based on scientific evidence are published to solve the health myth wandering on the internet, help readers avoid being misled by unconfirmed information, and thus safeguard personal health.