Obesity can be linked to the overall increased risk of cancer. Being overweight or excess body fat can affect the function of the immune system. Excess body fat can also cause chronic inflammation and affect the levels of certain hormones such as leptin and estrogen. It also affects the levels of insulin and/or glucose in the blood — all of which result in changes to normal cells, which may lead to cancer.
Obesity can influence the cancer risk but if a person maintains a healthy body weight it reduces the risk.
The various cancers that are associated with obesity are breast cancer, brain cancer, thyroid cancer, liver cancer, kidney cancer and esophageal cancer.
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