Positive thinking

Camille Lassale, UCL Being depressed can negatively affect your appetite and what you eat, but can bad eating habits bring your mood down? Our latest study, a systematic review of the best available evidence , found a clear link between the quality of a person’s diet and their risk of depression. And it goes beyond the effect of diet on body size or other aspects of health that can affect mental health. We took extra care in including only studies that took age, sex, income, body size, general health, smoking and physical activity into account in their analyses. That way we could be sure that the associations between diet and the risk of depression are independent of these factors. We aggregated the results of several studies and found a clear pattern that following a healthier, plant-rich, anti-inflammatory diet can help prevent depression. Of the 41 studies in our review, four specifically looked at the link between a traditional Mediterranean diet and depression over t...

   Martin Cohen, University of Hertfordshire The “obesity epidemic” deserves much more serious attention than it is getting. It is, after all, thought to be killing nearly 3m people a year worldwide. It is putting huge pressure on health services, yet the public policy response in developed countries such as the US and UK is pitiful, largely confined to finger-wagging at children’s sugary treats. The story that has not been getting out is that there is a clear and extraordinary correlation between obesity and social inequality. Obesity is invariably presented as a diet issue for nutritionists, whereas social inequality is deemed the domain of sociologists and economists. Put another way, even as the inequality gap becomes more and more obvious there’s been a medicalisation of a social problem. Yet obesity is not just a matter for nutritionists: rather, it is a product of social inequality and requires a collective social response. This failure to face up ...