The role of hormones in metabolism is to regulate various biochemical processes that convert food into energy. Hormones such as insulin, glucagon, and thyroid hormones interact with cells to modulate metabolic pathways, including those governing carbohydrate, protein, and fat metabolism. For instance, insulin facilitates glucose uptake by cells, while glucagon works to release glucose into the bloodstream, ensuring energy balance. Proper hormonal function is essential for maintaining metabolic homeostasis and overall health.