Refeeding syndrome is defined as a potentially fatal shift in fluids and electrolytes, which may occur in malnourished patients receiving rehabilitative refeeding. A young man presented with muscle weakness and leg pain. He had adhered to a strict low-carbohydrate, low-calorie diet for five months in preparation for a bodybuilding competition. He ate a large amount of carbohydrate rich foods and consumed water immediately after the competition. Laboratory findings showed hypophosphatemia, hypokalemia, and elevated levels of serum creatine phosphokinase. This case of rhabdomyolysis was caused by refeeding syndrome in a young man who had followed a strictly controlled diet.

• 김주영(Department of Internal Medicine, Saint Carollo Hospital, Suncheon, Korea) | Ju Yeong Kim
• 김병기(Department of Internal Medicine, Saint Carollo Hospital, Suncheon, Korea) | Byung Ki Kim
• 정용진(Department of Internal Medicine, Saint Carollo Hospital, Suncheon, Korea) | Yong Jin Jeong
• 진석재(Department of Internal Medicine, Saint Carollo Hospital, Suncheon, Korea) | Suk Je Jin
• 정종혁(Department of Internal Medicine, Saint Carollo Hospital, Suncheon, Korea) | Jong Hyeok Jeong Corresponding author