Down syndrome (trisomy 21) and cerebral palsy are something you're born with no? Epilepsy too maybe? (even if it only declares later on in life?) So how is thi

Down syndrome (trisomy 21) and cerebral palsy are something you're born with no? Epilepsy too maybe? (even if it only declares later on in life?) So how is this not inversing cause and effect: > Or are left-handed people way, way more likely to suffer from these rare diseases?