High-protein diets can lead to several side effects if not balanced properly. These diets often increase the risk of dehydration due to the body needing more fluids to process excess protein. Over time, individuals may experience kidney stress, particularly those with pre-existing conditions. Additionally, high-protein diets can result in nutrient deficiencies if they lack a variety of food groups. Individuals may also experience digestive issues such as constipation if fiber intake is inadequate. Finally, reliance on protein-rich foods may lead to increased saturated fat consumption, impacting heart health.