While peanuts contain some acidic components, the overall effect of their metabolism is alkaline-forming. This means that they leave a net alkaline residue in the body after digestion.

Here's why:

* Minerals: Peanuts are rich in minerals like potassium, magnesium, and calcium, which are alkaline-forming.

* Amino Acids: The amino acids in peanuts are also known to contribute to an alkaline effect.

While the concept of "acid-forming" and "alkaline-forming" foods is somewhat complex and not fully supported by scientific consensus, it's generally accepted that peanuts have a net alkalizing effect on the body.

It's important to note that the specific impact of foods on body pH is influenced by various factors, including individual metabolism and dietary habits.