Fats and oils are types of lipids that provide energy and support cell growth. They are essential nutrients found in various foods, including butter, olive oil, and avocados. Fats can be classified as saturated or unsaturated, with unsaturated fats generally being healthier for the heart. In addition to energy, fats and oils help the body absorb vitamins A, D, E, and K. They also play a role in hormone production and maintaining healthy skin. It's important to consume fats in moderation, focusing on healthier sources like nuts and fish while limiting saturated and trans fats.