Metabolic disorders are a group of conditions that affect the body's ability to break down and use food for energy. These disorders can be caused by genetic mutations, environmental factors, or a combination of both. Symptoms of metabolic disorders can include fatigue, weight gain, muscle weakness, and difficulty concentrating. In some cases, metabolic disorders can lead to serious health complications, such as organ failure or even death. Treatment for metabolic disorders typically involves dietary changes, medications, and lifestyle modifications.