Maintaining a healthy weight is important for cancer prevention from "summary" of Anticancer by David Servan-Schreiber, MD, PhD
The link between excess weight and cancer is now well established. One-third of all cancers are related to obesity, poor diet, and lack of physical activity. Fat tissue is no longer considered just a storage depot for excess energy. It secretes hormones and proteins that can trigger inflammation and feed the growth of cancer cells. The more overweight a person is, the higher the risk of developing cancer. Fat cells produce estrogen, a hormone that can promote the growth of cancer cells in the breast, uterus, and ovaries. Excess weight also leads to a state of chronic inflammation in the body, which can damage DNA and increase the risk of cancer. Maintaining a healthy weight is crucial for preventing cancer because it helps regulate hormone levels and reduce inflammation. Losing even a small amount of weight can have a significant impact on cancer risk. A study found that women who lost just 5% of their body weight reduced their levels of estrogen and insulin, two hormones linked to cancer, by 20%. In addition to weight, the type of fat in the body also plays a role in cancer risk. Visceral fat, which accumulates around the organs in the abdomen, is more metabolically active and produces more hormones and proteins that can promote cancer growth. This type of fat is particularly dangerous for cancer risk. Regular physical activity is essential for maintaining a healthy weight and reducing cancer risk. Exercise helps burn fat, regulate hormone levels, and reduce inflammation in the body. It also strengthens the immune system, making it better able to detect and destroy cancer cells before they can form tumors.- Maintaining a healthy weight through a balanced diet and regular exercise is one of the most effective ways to prevent cancer. By reducing inflammation, regulating hormone levels, and promoting a healthy immune system, weight management can significantly lower the risk of developing cancer.
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