The term 'ENERGY PROBLEM' can be solved by the crossword solution 'ANEMIA', which is a medical condition caused by a lack of red blood cells or hemoglobin. It can lead to fatigue, weakness, and other symptoms due to the body's inability to transport oxygen throughout the body. ANEMIA can be caused by a variety of factors, including dietary deficiencies, chronic diseases, and certain medications. Treatment for ANEMIA typically involves iron supplements, dietary changes, and lifestyle modifications.