Fat cells, also known as adipocytes, store energy in the form of triglycerides. When the body needs energy, these cells release stored fat through a process called lipolysis.
During lipolysis, hormones like epinephrine, norepinephrine, glucagon, and growth hormone trigger the breakdown of triglycerides into glycerol and free fatty acids (FFAs).
These FFAs are released into the bloodstream and transported to various tissues, such as muscles, liver, and heart, where they can be used as fuel.
The process of lipolysis is regulated by various factors, including:
- Hormonal signals: Hormones like insulin and leptin can inhibit lipolysis, while hormones like glucagon and adrenaline can stimulate it.
- Nutritional status: During fasting or prolonged exercise, lipolysis is increased to provide energy for the body.
- Physical activity: Exercise increases blood flow to fat cells, which promotes the release of FFAs.
In summary, fat cells release fat by breaking down triglycerides into glycerol and free fatty acids, which are then released into the bloodstream and transported to other tissues for energy.
