* Energy storage: They act as a reservoir for excess energy from food. When we consume more calories than we burn, the body converts those extra calories into triglycerides and stores them within fat cells.
* Energy release: When needed, fat cells release stored triglycerides, breaking them down into fatty acids that can be used by other cells for energy.
* Hormone production: Fat cells are not just passive storage units. They also produce and release various hormones, including:
* Leptin: A hormone that signals to the brain about satiety and energy stores.
* Adiponectin: A hormone that helps regulate blood sugar levels and insulin sensitivity.
* Resistin: A hormone that can contribute to insulin resistance.
* Insulation: Fat cells provide insulation, helping to maintain body temperature.
* Cushioning: Fat cells serve as padding around vital organs, protecting them from injury.
Key takeaway: Fat cells are essential for energy storage and release, but they also play important roles in hormone production and other bodily functions.
