Though the importance of protein to human health is well-established, the question remains as to what type of protein is the best. While measures of protein quality exist (including the current standard, the Protein Digestibility Corrected Amino Acid Score), this is not the entire story. It turns out some proteins are more effective for a given purpose than others.
These purposes include glutathione production, insulin secretion, muscle-building, immune support, appetite reduction, menopause support and bone density, cardiovascular health, growth hormone release and blood pressure reduction, to name a few. The popular ingredients casein, whey protein concentrate (WPC), whey protein isolate (WPI), hydrolyzed whey protein, soy protein, rice protein, algal protein (chlorella protein) and hemp protein offer their own benefits backed by research.
In addition, certain protein controversies have arisen. For example is soy protein safe for use by men, or will it reduce testosterone, increase estrogen and have a feminizing effect?
Research has provided a comprehensive understanding of established and up-and-coming milk-based and vegetarian proteins, their uses, advantages and limitations. If you are in the business of selling protein products, or just want to know more about the different types of protein for your own edification, make sure to read the full article Examining Popular Forms of Protein" in INSIDER's Content Library.