Exercise does prevent cancer. According to a research paper published by American Cancer Center researchers in the year of JAMA: Internal Medicine, the incidence of at least 13 cancers was significantly lower for people who exercised for a long period of time, according to an analysis of data from 1.44 million people in the United States and Europe. To date, this is the largest and most comprehensive study in an article on exercise and cancer rates.
Exercise improves the body's immune function, which is beneficial for cancer prevention. Studies have found that cancer cells can only grow and multiply when they escape human immune surveillance. If a person's immune system is intact, cancer will not occur. Cancer patients who can maintain and improve their immune function can effectively inhibit and defeat cancer. Research has proven that regular exercise can effectively improve autoimmune function. For example, exercise can significantly increase the immune cells in the body, such as T-lymphocytes, B-lymphocytes and phagocytes, thus enhancing the body's ability to fight cancer. Exercise can also increase the level of interferon in the blood, which is also the body's immune booster and has preventive and anti-cancer effects.
Preventing cancer cells from "settling" and "metastasizing". During exercise, the blood circulation of the body speeds up. At this time, cancer cells are like small sand in the turbulence. They do not easily "stand still", and therefore are not suitable for cancer cells to "settle" and form spread and metastasis. In bloodstream operations, it is often eliminated by the immune cells of immunocompetent people.
Regular exercise controls blood sugar levels and "starves" cancer cells. Nobel Prize winner Dr. Otto Warburg discovered for the first time that cancer cells are fundamentally different from healthy cells when it comes to energy metabolism. Cancer cells ferment glucose in an anaerobic environment. It absorbs 3-5 times more glucose than healthy cells. It feeds directly on blood sugar and eats almost exclusively sugar. Regular exercise can promote metabolism, control blood glucose, maintain good blood glucose levels, selectively "starve" the existence of cancer cells in the body, is conducive to the prevention and fight against cancer.