BMJ 2007; 334 doi: https://doi.org/10.1136/bmj.39100.564769.471 (Published 25 January 2007) Cite this as: BMJ 2007;334:214

A small study of women in mid and late pregnancy finds that those who take more aerobic exercise tend to have smaller babies—but only if the women are tall (Obstetrics and Gynecology 2007;109:81-7 www.greenjournal.org/cgi/content/full/109/1/81). The investigators speculate that in shorter women fetal growth is already constrained by maternal size, so physical activity during pregnancy has less opportunity to influence how the baby develops.

Follow-up of the 1970 British birth cohort finds that those who scored highly when their IQ was tested at the age of 10 were more likely to eat a healthy diet and take vigorous exercise when they became adults (Pediatrics 2007;119:38-45 doi: 10.1542/peds.2006-1831). Although this may not be surprising, the authors suggest that advice about diet and exercise should be made simpler, so that it is more accessible to people of lower cognitive …

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