• Research Psychologist, Health Behaviour Research Centre, UCL
The World Health Organisation considers people with a BMI below 18.5 to be underweight and at risk of being malnourished. Jeanette Goodrich/Flickr

Weighing the evidence for banning skinny catwalk models

The French government is backing parliamentary plans to ban unhealthily thin models from catwalks, but do the bodies of these models really affect women’s self-image?
Studies suggest friends, family members and even colleagues of smokers or obese people are more likely to smoke or be obese themselves. Barry/Flickr

Beware, a ‘non‑communicable’ disease may be socially infectious

The leading cause of death in the world are a group of illnesses known as non-commmunicable diseases. But a growing body of evidence shows they’re actually social contagions.

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