Christine M. Friedenreich

TL;DR: New WHO 2020 guidelines on physical activity and sedentary behaviour reaffirm messages that some physical activity is better than none, that more physical Activity is better for optimal health outcomes and provide a new recommendation on reducing sedentary behaviours.

TL;DR: Neither aerobic nor resistance exercise significantly improved cancer-specific QOL in breast cancer patients receiving chemotherapy, but they did improve self-esteem, physical fitness, body composition, and chemotherapy completion rate without causing lymphedema or significant adverse events.

TL;DR: The effects of menarche and menopause on breast cancer risk might not be acting merely by lengthening women's total number of reproductive years, and endogenous ovarian hormones are more relevant for oestrogen receptor-positive disease than for ostrogens receptor-negative disease and for lobular than for ductal tumours.

TL;DR: There was consistent evidence from 27 observational studies that physical activity is associated with reduced all-cause, breast cancer- specific, and colon cancer-specific mortality, and Randomized controlled trials of exercise that included biomarker endpoints suggest that exercise may result in beneficial changes in the circulating level of insulin, insulin-related pathways, inflammation, and, possibly, immunity.

TL;DR: Evidence is increasing that exercise also influences other aspects of the cancer experience, including cancer detection, coping, rehabilitation and survival after diagnosis.