Unique brain circuit is linked to Body Mass Index

Why can some people easily stop eating when they are full and others can't, which can lead to obesity? A new study has found one reason may be a newly discovered structural connection between two regions in the brain that appears to be involved in regulating feeding behavior. These regions involve the sense of smell and behavior motivation.The weaker the connection between these two brain regions, the higher a person's Body Mass Index, the scientists report.