Intended for healthcare professionals


Focus on fitness . . . and other stories

BMJ 2021; 375 doi: (Published 14 October 2021) Cite this as: BMJ 2021;375:n2444

Fitness not fatness

Except for bariatric surgery, few interventions achieve long term weight loss in people who are overweight or obese. An article in iScience points out that the health risks incurred by obesity are attenuated, or even eliminated, by moderate and high levels of cardiorespiratory fitness. It argues that it might be better to emphasise the benefits of physical activity and pay less attention to weight loss (iScience doi:10.1016/j.isci.2021.102995).

Cancer risk after radioactive iodine treatment

Ionising radiation is known to damage DNA and increase the risk of carcinogenic mutations, so monitoring of cancer incidence after radio-iodine treatment for hyperthyroidism is clearly worthwhile. …

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