Pumpkin seed protein is derived from the seeds of the pumpkin fruit. In the United States, pumpkins have been used for over 400 years, first by Native Americans and then by settlers. Pumpkin seeds were a significant part of their diet, being eaten raw, roasted, or boiled. Pumpkin seed protein was first introduced to the United States in the late 1800s as a unique way to consume more protein. It has become a popular food due to its level of quality nourishment.