I heard that vitamin anti-cancer has been very hot recently? Poured cold water by new research
A few days ago, two studies published on Natrue and Cell successively pointed out that vitamin C has an anti-leukemia effect, which has caused widespread concern at one time. Some netizens have expressed their stance: "It is good to eat vitamin C for a cold", "Some people have cancer, no chemotherapy, only vegetables, and then healed." "Vitamin C is water-soluble and can be excreted from the body and eat more."
Seeing such remarks, Xiao Bian feels it necessary to splash the cold water: Last year's in-depth article "Why vitamin pills dont't work, and may be bad for you" on the BBC revealed a lot of antioxidants such as vitamin C. Hazard. A new study recently showed that long-term, high-dose vitamin B6 and B12 may increase the risk of lung cancer in men by two to four times. This effect is more pronounced in smoking men. Compared with people who do not use vitamin supplements, smoking men who take more than 20 mg of B6 per day for 10 years are three times more likely to develop lung cancer. Smoking men who take more than 55 mg of B12 per day are nearly four times more likely to develop lung cancer. Researchers from the Ohio State University Comprehensive Cancer Center reported their findings on the Journal of Clinical Oncology, published on August 22, 2017.
This is the first prospective observational study to examine the impact of long-term high-dose B6/B12 supplementation on lung cancer risk. The researchers analyzed data on the vitamin and lifestyle cohort of 77,000 participants to assess the relationship between vitamins and other mineral supplements and cancer risk. All participants were recruited from Washington State between 2000 and 2002, aged between 50 and 76 years old. In this study, participants reported to the researchers about the use of vitamin B over the past 10 years. This includes dose information, which is an important but often overlooked detail for risk assessment and association studies.
In this new analysis, researchers used statistical techniques to adjust a variety of factors, including: personal smoking history, age, ethnicity, education, weight, alcohol consumption, personal cancer or chronic lung disease history, family history of lung cancer, and anti-inflammatory drugs. use. Taking into account these factors, the study data still show that long-term use of high doses of B6 and B12 can lead to an increased incidence of lung cancer in male smokers. However, the current study did not find a link between vitamin B intake and disease in women, and the researchers will further validate it.
It is always a hot topic to talk about whether vitamins are necessary or not. In fact, many of the arguments that vitamins can treat various diseases are not supported by large-scale clinical trials. A study published last year on BMJ on vitamin D showed that the current evidence is insufficient to support the use of vitamin D supplements to prevent disease. Studies suggest that for those who are deficient in vitamin D, they should be advised to have more sun and a reasonable diet, and to use low-dose supplements, but for most of us, keeping the diet balanced and regularly drying in the sun for a short time is enough. . In addition, studies published in Nature in previous days recommended that vitamin C supplementation against leukemia is also targeted at those with mutations in the risk of developing diseases. Xiao Bian believes that it is better for healthy people to focus on healthy lifestyles and diverse diets than to treat “imaginary diseases†such as “lack of vitaminsâ€.
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