Protein, often referred to as the body’s building blocks, indeed plays a critical role in maintaining overall health and well-being. It is an essential macronutrient responsible for various vital functions in the body, including muscle development, immune system support, and the synthesis of hormones and enzymes. However, despite its importance, many people worldwide suffer from protein deficiency, which can lead to a range of health issues. In this article, we will delve into the causes, symptoms, and solutions to protein deficiency in humans.