In a 1930s study, children aged 6-11 months self-selected diets that balanced alkaline and acidic foods, with a majority showing a preponderance for alkaline foods over a six-month observation period.

“in this study all of the kids selected at least a balance of what they considered to be alkaline and acidic foods during the self-selection process and the majority of the kids actually had a moderate preponderance for potentially alkaline in the six-month period of observation of those children when they were self-selecting their diet”