A new study looking at data from 4,000 kids suggests there is a link between food allergies and obesity.

The research was led by Dr. Cindy Visness, and published in the Journal of Allergy and Clinical Immunology.

The children involved in the study (which looked at wider health factors than obesity and allergies) were aged between 2 and 19. The New York Times reported on some of the findings:

Overweight and obese children were over 50 percent more likely than those of normal weight to be allergic to milk. Over all, the obese and overweight children were about 25 percent more likely to have one or more food allergies.

The researchers were rightly cautious about drawing the conclusion that obesity causes food allergies, noting that the corrolation could be for other reasons.

It's possible that children with food allergies are less likely to eat a balanced diet for instance, potentially increasing their chances of becoming overweight or obese.

With increasing numbers of kids with food allergies, and childhood obesity becoming a global problem, it seems important that more research is conducted into the rise of both allergies and obesity amongst children.

Study: Association of obesity with IgE levels and allergy symptoms in children and adolescents: Results from the National Health and Nutrition Examination Survey 2005-2006.