Colon cancer cell growth slows immediately after a HIIT session, according to a pilot study published in the Journal of Physiology (2019; 597 , 2177-84). More physical activity is linked with a lower death risk for people with colorectal cancer.
When measuring the effect of acute exercise (one HIIT session) and longer-term exercise (a 4-week HIIT program) on colon cancer cell growth, the researchers noted that less growth occurred immediately following high-intensity interval exercise. Knowing this may be important for understanding the relationship between exercise and cancer mortality. More research is recommended.