Aminolevulinic acid (ALA) is a naturally occurring compound in the body that plays a crucial role in the production of heme, an essential component of hemoglobin in red blood cells. It is involved in various biological processes, including energy production and cellular respiration. ALA is also used in medical applications, particularly in photodynamic therapy for certain types of cancer and skin conditions. In addition to its medical uses, ALA is found in some dietary sources, such as spinach, broccoli, and red meat. It is available as a dietary supplement and is sometimes promoted for its potential benefits in enhancing energy levels and improving skin health. However, scientific evidence supporting these claims varies.