Dehydrogenases are a type of enzyme that play a crucial role in biochemical reactions by facilitating the removal of hydrogen atoms from substrates. This process is essential for various metabolic pathways, including the conversion of food into energy. Dehydrogenases often require coenzymes, such as NAD+ or FAD, to assist in the transfer of electrons during these reactions. These enzymes are found in many organisms, including humans, and are involved in processes like cellular respiration and fatty acid oxidation. By helping to oxidize molecules, dehydrogenases contribute to the production of energy-rich compounds, which are vital for maintaining cellular functions and overall health.