Peanut butter has been used for medical purposes in the past
In 1890, Dr. Ambrose Straub, a doctor from St. Louise, started prescribing this savory spread to people with no teeth as an alternative source for protein. With the absence of a functioning set of teeth, people were unable to chew meat. Hence, Dr. Straub started advising such people to consume this butter for the regular protein intake. Before this, the butter was primarily used as food for cattle and livestock.