John Harvey Kellog (yes that Kellogg on your sugary cereals) hated masturbation and thought it would rot your child's brain. He thought spicy foods made you sexually excited and so people were convinced that giving your child bland foods would keep the hormones at bay. This made Kellogg put into production all these bland tasting cereals and graham crackers (which had little to no sugar back then) to keep your children from popping boners. He also would brag about not having sex with his wife of 20 years.
Considering the amount of stuff I know to be BS, that I have found in IZI to date, I have a hard time believing any of this