Too much of a good thing?
Of course, Sarah and Anthony are correct in recognizing the importance of protein. Proteins are large biomolecules consisting of long chains of amino acids, and like carbohydrates and fat, are macronutrients. Macronutrients are compounds that humans (and many other animals) need in their diets to meet their nutritional needs and provide the energy, or calories, they need to survive.
But what Sarah and Anthony don’t know is that they may be eating unhealthy amounts of protein. While all that protein might provide some of the benefits they have heard about, scientists and doctors don’t know whether eating extra protein—particularly in the form of supplements such as protein powders and bars—lives up to all the hype.
By loading up on protein at the expense of other foods, Sarah and Anthony might be missing out on important nutrients, such as those found in whole grains and fresh fruits and vegetables. In addition to dairy or dairy substitutes, these foods are part of a balanced diet, providing the vitamins, minerals, and other nutrients needed to stay healthy. Consuming too little of any one food group, or too much, can cause imbalances that can be detrimental to one’s health.