Gut bacteria may play a role in eating disorders - By Dr. Tracy McAlvanah
Eating disorders affect an estimated 5 to 10 percent of the population and are generally thought to be a psychological disorder. However, new research from France shows gut bacteria can also play a role in causing eating disorders. The study showed eating disorders developed in mice who had an immune reaction to a protein made by gut bacteria. Basically they reacted to these proteins as if they had an allergy or sensitivity to them. The protein made by the gut bacteria is very similar in structure to a satiety hormone called alpha-Melanocyte-stimulating hormone (a-MSH). When the immune system reacts to the protein it reacts to the a-MSH too because they are so similar. This reaction causes the immune system to attack a-MSH, which regulates feeding, energy usage, and anxiety. Mistaken identity and friendly fire by the immune system When a pathogen, such as infectious bacteria, is similar to a tissue or hormone in the body and the immune system can’t distinguish between th...