A pair of outlets report that protein supplements are widely used beyond bodybuilding, with people mixing protein powder into foods and drinks such as coffee, yogurt and baked goods, and marketing claims extending to areas including skin and immunity. The articles focus on the idea that many users may not be using protein correctly and highlight “crucial mistakes” that can affect results. The coverage frames protein as a tool that can support muscle building, and it also notes secondary benefits that supplement marketing often claims, such as improvements related to hair, skin and nails, as well as immune support. While the sources emphasize the popularity of protein products and urge readers to avoid common errors, they do not provide a consistent, detailed medical or nutritional consensus within the excerpts provided. Overall, the reporting centers on everyday usage patterns, the prevalence of protein in consumer diets, and the need for more careful, informed use to get intended benefits.