No wonder sometimes it’s hard to stop eating even when you know you’re full.

A U.S. study by UT Southwestern Medical Center at Dallas has found that fat from certain foods such ice-cream and burgers heads to the brain. Once there, the fat molecules trigger the brain to send messages to the body’s cells, warning them to ignore the appetite-suppressing signals from leptin and insulin, hormones involved in weight regulation — for up to three days.

http://www.reuters.com/article/lifestyleMolt/idUSTRE58E0W320090915