Common nutritional deficiencies in athletes often involve essential vitamins and minerals due to increased energy demands. One prevalent deficiency is iron, crucial for oxygen transport and energy production, especially in endurance athletes. Vitamin D is another common shortage, vital for bone health and muscle function. Athletes may also lack adequate calcium, important for bone integrity and preventing injuries. Additionally, Omega-3 fatty acids and antioxidants are often insufficient, which can affect recovery and overall health. Regular dietary assessments can help identify and address these deficiencies.