Sugar. Some cancer cells have a sweet tooth. In fact, many cancer cells tend to get their energy directly from sugars, which they burn anaerobically without oxygen. High levels of blood sugar from metabolic syndrome are thus associated with increased rates of cancer.97 Exercise may thus help prevent and fight cancer by depriving cancer cells of ready energy. Furthermore, because high-intensity exercise inhibits anaerobic sugar metabolism, extremely vigorous exercise may be especially effective for preventing and fighting certain cancers.
