Peroxisomes are small, membrane-bound organelles found in the cells of many eukaryotic organisms. They play a crucial role in breaking down fatty acids and detoxifying harmful substances, such as hydrogen peroxide, which is a byproduct of cellular metabolism. Enzymes within peroxisomes facilitate these processes, helping to maintain cellular health. These organelles are particularly abundant in the liver and kidney cells, where detoxification is essential. Peroxisomes also contribute to the synthesis of certain lipids, including plasmalogens, which are important for the structure of cell membranes. Their proper functioning is vital for overall metabolic balance in the body.