Why Are People Concerned About Protein Powder Side Effects? Protein powders are often misunderstood because they come in a packaged form. Many people assume they are artificial or harmful, while others believe they automatically damage the kidneys. In reality, whey protein is simply a concentrated source of protein derived from milk. It contains the same essential amino acids found ... https://www.freedomfromdiabetes.org/blog/post/surprising-truth-about-protein-shakes-and-health/5281