We know that excess proteins can produce toxic waste products. If they are so toxic, why do people eat proteins?
The correct answer and explanation is:
Correct Answer:
People eat proteins because they are essential for the body’s growth, repair, and overall function, despite the potential for toxic waste products when consumed in excess.
Explanation (300 words):
Proteins are vital macronutrients that the body needs to perform a wide range of critical functions. They are made up of amino acids, which serve as the building blocks for tissues, muscles, enzymes, hormones, and immune system components. Without sufficient protein, the body cannot properly build or repair tissues, maintain muscle mass, or support metabolic functions.
Although excess protein can result in the production of toxic waste products—mainly nitrogen-containing compounds like urea and ammonia—this only becomes a concern when protein intake significantly exceeds the body’s needs over time. The liver plays a key role in breaking down excess amino acids, converting the nitrogen into urea. The kidneys then filter this urea out through the urine. As long as the liver and kidneys are functioning properly and hydration is adequate, the body can handle a moderate excess of protein without harm.
It’s also important to note that the presence of toxic by-products does not mean protein itself is harmful. Many nutrients can produce waste or become harmful in excess—this includes vitamins, minerals, and carbohydrates. The key is balance. People eat proteins because the benefits far outweigh the risks when consumed in recommended amounts.
Dietary guidelines recommend that adults get about 10–35% of their daily calories from protein. For most people, this level supports health and bodily functions without putting undue strain on the organs responsible for waste elimination.
In summary, while excessive protein intake may generate toxic waste, eating appropriate amounts of protein is essential and safe. It is the overconsumption—not the nutrient itself—that poses the risk. Thus, people eat protein because it is indispensable to life and health when consumed responsibly.