Jerry Mathers is a television, film, and stage actor, best known for his role in 
the television sitcom series Leave it to Beaver (1957-1963,CBS/ABC). He
portrayed Theodore “Beaver” Cleaver, the younger son of June and Ward
Cleaver, played by Barbara Billingsley and Hugh Beaumont. Mathers was
diagnosed with diabetes in 1996. He took preventive action, lost 55 pounds
and is currently one of the leading lecturers on living with and dealing with
diabetes.