Typical signs of nutrient deficiency in athletes can include fatigue, muscle weakness, impaired recovery, and decreased performance levels. Specific deficiencies, such as iron, can result in anemia, leading to reduced oxygen transport and lower energy levels. Vitamin D deficiency may cause weakened bones and increased injury risk. Additionally, inadequate protein intake can hinder muscle repair and growth, leading to prolonged soreness. Keeping an eye on these signs and maintaining a well-balanced diet rich in essential nutrients is crucial for athletes to stay healthy and perform at their best.