Plant protiens are an incomplete source of protien, low bioavailability. Protein bioavailability has much to do with the type and relative amounts of amino acids present in a particular protein molecule. Yes, the body has the ability to convert and make many of the amino acids it needs, but the nine essential amino acids cannot be manufactured by the body and must be supplied by the food we eat. Most animal proteins, by definition, contain all of the essential amino acids in sufficient amounts. The protein of cereals, most beans, and vegetables may contain all the essential amino acids, but the amounts in these plant foods is often less than ideal, particularly the branch chain amino acids.
Whey, Egg and meat/fish are good complete protien source. Plant protiens are not.
Also, Peas are legumes. Most legumes are extremely toxic in their raw state. The Perfect Health Diet reports that raw kidney beans at only 1% of a rat’s diet can kill it in just 2 weeks. Legumes have to be soaked, fermented, or sprouted in order to make them safe to eat. This necessary step of preparation is enough to convince most paleo followers that this is a food we shouldn’t be eating.
The goal of these food preparations is to reduce the lectin and phytate content of legumes. Lectins and phytates are inherent in most foods, but they are especially high in grains and legumes. Lectins have been shown to strip away mucous from the small intestine, which is one of the key causes in many autoimmune diseases. Lectins have also been found guilty of causing symptoms similar to food poisoning, even when no other pathogens were present.
Phytates, specifically phytic acid, have been shown to block the mineral absorption of calcium, magnesium, iron, and zinc. Many people believe that this decreased absorption helps to explain Americans high rate of disease and osteoporosis, despite our high level of dairy consumption. Phytates have also been shown to inhibit important enzymes involved in digestion, including pepsin and amylase.
FYI Peanuts are actually Legumes!!