Thursday, April 8, 2021

Vitamin A and Cancer

Vitamin A and Cancer

People who smoke and suffer from lung cancer should think carefully before taking vitamin supplements, according to a Swedish study that shows that certain antioxidants can accelerate the growth of tumors. Taking vitamins B12 and B6, was though to protect against cancer, is now associated with a two- to fourfold increase in lung and breast cancer risk in smokers and a three- to five-fold increase in risk in people who did not smoke or smoke. According to the new study, vitamin A, which was previously considered to protect against cancer, was not only associated with a higher risk of cancer, but also with a higher risk of other cancers such as breast and prostate cancer. This means that the study found no evidence of an association between the use of vitamin A supplements and lung or breast cancer in healthy people.    

To the best of our knowledge, there is no evidence of an association between vitamin A use and lung or breast cancer in healthy people. The meta-analysis included 18 articles focusing on the association between vitamin B12 and B6 supplementation and cancer risk in the United States and the United Kingdom.   

We identified 104 estimates that examined the association between vitamin B12 and B6 supplementation and lung and breast cancer risk in healthy people. The estimates were grouped by vitamin, and these estimates grouped each vitamin according to the number of times it was evaluated in the meta-analysis.   

Vitamin supplements are recommended for children with measles who are at increased risk of vitamin deficiency. Vitamin palmitate supplementation, either oral or injectable, can be used to treat vitamin deficiency. Doctors may suggest taking multivitamins such as vitamin A and beta-carotene before taking medication.    

If you are thinking of supplementing your diet with cancer-inhibiting vitamins, talk to your doctor about using supplements. This is very important because many studies have shown a link between vitamin A and cancer, as well as other diseases such as diabetes, heart disease and Alzheimer's. When you are thinking about supplements, you should talk to a doctor before taking them.    

In summary, we do not know at this stage whether taking vitamin D supplements reduces your risk of breast cancer or whether you get the disease in women who already have breast cancer. Although dietary factors can be critical to changing cancer risk, it remains unclear whether vitamin supplements prevent breast cancer, according to a review that took into account studies on the effects of vitamin A and cancer in men and women in the US.    

Evidence from epidemiological studies is scant in terms of vitamin intake and risk of liver cancer. Studies evaluating vitamin E supplements have not shown an increased risk, and studies of vitamin D supplements in men and women in the United States have shown conflicting results on positive effects or no effects. Similarly, vitamin E is associated with a lower risk of prostate cancer, but studies investigating its effects on breast cancer in both women and men have shown conflicting results regarding its positive effect or effect. Some studies have tested vitamin D supplements for their ability to prevent cancer and heart disease, but researchers found they did not reduce the incidence of cancer or heart disease.   

Vitamin A and retinol levels are associated with the risk of prostate cancer: a meta-analysis of studies that examine a large number of cancer patients. Importantly, they found a significantly increased risk in men and women with high levels of vitamin A in their blood.    

In addition, the researchers found that vitamins in a balanced diet reduce the likelihood of cardiovascular disease. Research has found that high levels of vitamin A and retinol in the blood of men and women are associated with a significantly higher risk of lung cancer in men than in women. They also found a significant association between high vitamin A levels and a reduced risk of cancer. The dose given in this study to increase the risk of lung and cancer is the same as that given to people without dietary supplements.    

With the consumption of vegetables and fruit, the absorption of vitamin C can play an important role in the defense against cancer. In addition, epidemiological and observational studies based on food intake provide evidence of a link between food intake and cancer risk in men and women.    

Studies have shown that a higher intake of vitamin A is associated with an increased risk of prostate cancer. Studies on food intake suggest a positive association between high vitamin C intake and cancer risk in men and women, the NIH said.   

The evidence for vitamin D and cancer risk is mixed and varies by cancer type and vitamin dose. Biological and epidemiological data suggest that vitamin D status may influence cancer risk and play a role in cancer prevention. The article cites research from the National Cancer Institute and the U.S. Centers for Disease Control and Prevention.