A common nutrient deficiency among athletes is iron. Athletes, particularly those involved in endurance sports, may experience increased iron demands due to higher blood volume and losses through sweat. Insufficient iron levels can lead to anemia, resulting in fatigue and decreased performance. Adequate iron intake is crucial for optimal oxygen transport in the body, which is essential for endurance and agility. To mitigate this deficiency, athletes should focus on incorporating iron-rich foods such as leafy greens, lean meats, and fortified cereals into their diets.