Energy control, metabolism, and homeostasis depend on fat cells, or adipocytes. Fat cells store and release energy, but they also secrete adipokines and participate in physiological processes.
Triglycerides are fat cells' main energy source. Extra food energy is stored in fat cells for eventual use during energy shortages.
Energy from fat cells is released as needed. When fasting, exercising, or responding to hormonal impulses.
Adipose tissue insulates and regulates body temperature. Insulation is provided by subcutaneous fat.
Endocrine fat cells release hormones and signaling chemicals. These chemicals, including adipokines, regulate physiological processes.
Adiponectin affects insulin sensitivity and inflammation, while leptin controls hunger and energy balance.
Adipose tissue, which contains immune cells, regulates the immune system. It affects immune function by producing pro- and anti-inflammatory signals.
Inflammation and insulin resistance are linked to resistin. High amounts may cause metabolic diseases including type 2 diabetes.
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