From the Editor
How much exercise is enough to prevent illness?
In the first selection, Ding Ding (of The University of Sydney) and her co-authors attempt to answer that question in a new, clever study for The Lancet Public Health. They did a systematic review and meta-analysis involving 57 studies that looked at daily step count and health outcomes, including depression. “Although 10 000 steps per day can still be a viable target for those who are more active, 7 000 steps per day is associated with clinically meaningful improvements in health outcomes and might be a more realistic and achievable target for some.” We consider the paper and its implications.

In the second selection, Isabelle Toler and Lindsey Grubbs (both of Case Western Reserve University) look at medical records and language in a paper for The New England Journal of Medicine. In a unique approach, they observe themes in the TikTok videos of patients who are frustrated by what their physicians have written about them. “In the context of a system of medical documentation in which patients have little power to shape their own narratives, clinicians should respect the channels they have chosen to use to share their stories and listen to the messages they convey.”
And in the third selection, psychologist Harvey Lieberman reflects on therapy and ChatGPT in an essay for The New York Times. As a therapist and an octogenarian, he is skeptical of the therapeutic aspects of ChatGPT – but, with use, he partly changes his mind. “I concluded that ChatGPT wasn’t a therapist, although it sometimes was therapeutic. But it wasn’t just a reflection, either.”
Note: there will be no Reading next week.
DG
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