"Casper weighed a little over 104 pounds at the time, which means the boy — who was 4 feet 2 inches tall when he died — gained roughly 150 pounds in less than two years. His diet consisted largely of potato chips and French fries...."

From "Michigan Couple Are Charged With Murder After Death of Morbidly Obese Son/Seven-year-old Casper O’Brien weighed 255 pounds when he died last year. Prosecutors said he was bedridden and subsisted on little more than snack foods" (NYT).