Can you become retarded from eating too much maple syrup?

There is a disease called Maple Syrup Urine Disease that is associated with mental retardation, but this has nothing to do with eating maple syrup. It is caused by a missing enzyme due to a genetic defect resulting in substances in the urine that make it smell like maple syrup. This is a disease people are born with. It is not acquired and has nothing to do with diet.