Healthy lifestyle linked to better colon cancer survival

“If you previously gave [colorectal cancer survivors] vague recommendations about diet and exercise, now you can be more precise and recommend five to six servings per day of fruits and vegetables and 150 minutes per week of exercise,” Michael J. Fisch, MD, MPH; Lorna H. McNeill, PhD, MPH; and Karen M. Basen-Engquist, PhD, MPH, wrote in an accompanying editorial in JAMA Oncology.

Although this was an observational study, the size of the association between survival and high adherence to American Cancer Society Nutrition and Physical Activity Guidelines was “certainly striking,” they wrote.

However, few study patients were younger than 50 years, were nonwhite, or had poor performance status, they noted. Additionally, contemporary adjuvant regimens (FOLFOX and CAPEOX) include oxaliplatin, which can cause chronic neurotoxicities that undermine physical activity.

Nonetheless, the data “strengthen the call to focus on lifestyle changes to extend and improve the lives of cancer survivors,” the editorialists concluded. Although making such changes is “notoriously difficult,” clues may come from six ongoing trials of weight control and physical activity in cancer survivors.

Dr. Fisch, Dr. McNeill, and Dr. Basen-Engquist all are at the University of Texas MD Anderson Cancer Center, Houston. Dr. Fisch also is with AIM Specialty Health, Chicago, Ill.; AIM is a subsidiary of Anthem. No other disclosures were reported. This editorial accompanied the article by Van Blanigan et al. (JAMA Oncology. 2018 Apr 12. doi: 10.1001/jamaoncol.2018.0124 ).