Raymond Baxter reports.
Medical research has recently uncovered a new approach to the cause and cure of one form of mental deficiency. It has been found that certain types of mental backwardness may be due to the eating of normal foods, which some children are unable to break down in the ordinary way.
Outside Broadcast and film cameras visit scientists engaged on research into one of these diseases, known as Phenylketonuria.
From the Metabolic Unit, Little Bromwich General Hospital, Birmingham and Exeter City Hospital.