Cranberry protein and pea protein are highlighted as complete plant-based proteins that provide all essential amino acids. Cranberry protein is extracted using cold-pressing to preserve nutrients, and pea protein is concentrated using a water-based process. When combined, cranberry and pea proteins complement each other by making up for each other's amino acid deficiencies. The document also discusses risks of whey protein from cows' milk, such as potential immunogenic responses and its role in conditions like diabetes and multiple sclerosis due to its bovine protein content.