Protein powders are dietary supplements that people take in order to gain more muscle mass. Protein powders are common among gym-goers, and so-called body builders who aspire to have a strong and muscular body. While protein powders are considered to be safe for everyone, they have certain side effects which make their consumption quite debatable. Whey protein is the most common protein supplement that gym goers and body builders take. It comprised a collection of globular proteins which are isolated from the liquid material. The liquid material is created as a by-product of cheese production. These globular proteins can do more harm to your body than benefit it.