I know of a fair number of families whereby only one person is obese. I began to wonder if there is a connection to arrival (birth). Eg. My sis, was queen b until I arrived. She got it in her head I'd replaced her so for attention she began picking at food as our mother would encourage her to eat. Being skinny worked for her. But how many "replaced" first born have gone the food route? Perhaps this will help overweight people deal with their issues.