Photo: Blue Bird

How do I activate brown fat?

Lowering the temperature: Brown fat activates at colder temperatures, right before you start shivering. Some studies suggest turning down the thermostat, taking a cold shower or an ice bath could activate brown fat to help your body produce more to burn more calories.

my.clevelandclinic.org - Brown Fat, Brown Adipose Tissue: What It Is & What It Means

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Overview What is brown fat? Brown fat, also called brown adipose tissue, is a type of body fat that keeps you warm when you get cold. Brown fat also stores energy and helps your body burn calories. Brown fat starts working (activates) in cold temperatures. What are the types of fat in my body? There are different types of fat in your body. Healthcare providers identify each type of fat by its color and function, including: White fat : Most of the fat in your body is white fat. White fat stores energy in various places around your body. White fat insulates your organs. Too much white fat leads to obesity. : Most of the fat in your body is white fat. White fat stores energy in various places around your body. White fat insulates your organs. Too much white fat leads to obesity. Brown fat : Brown fat is smaller than white fat. It stores energy and burns that energy to regulate your body temperature. Brown fat helps you burn calories by creating heat right before your body starts to shiver (thermogenesis). It also helps regulate sugar (glucose) and fat metabolism. : Brown fat is smaller than white fat. It stores energy and burns that energy to regulate your body temperature. Brown fat helps you burn calories by creating heat right before your body starts to shiver (thermogenesis). It also helps regulate sugar (glucose) and fat metabolism. Beige fat: Beige fat is a combination of white and brown fat cells. These cells burn calories to regulate body temperature by converting white fat cells to brown. Function What does brown fat do? Brown fat is responsible for producing heat to warm the blood in your body. You’ll notice brown fat burning right before you start to shiver because the fat activates (turns on) in cold temperatures. It produces heat by breaking down blood sugar (glucose) and molecules of fat. This process (thermogenesis) creates heat to help you maintain your body temperature. How does brown fat help my body? Brown fat helps your body in different ways including: Maintains your body temperature.

Produces and stores energy.

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Burns calories.

Helps control blood sugar and insulin levels.

Anatomy What does brown fat look like? Tiny molecules make up brown fat and those molecules are fat cells. Molecules consist of fatty acids and glycerol. The anatomy of brown fat resembles muscle more than it resembles other fat in your body because the cells that store brown fat in tissues (adipocyte) are smaller. When fat collects within your body, fat molecules lump together to create a mass. Brown fat looks like a small, brown, lumpy oval. Why is brown fat the color brown? Fat in your body has different colors that designate its function. Brown fat is brown because the fat cells are full of mitochondria. Mitochondria is made up of a lot of iron, which gives brown fat its color. Where is brown fat located? Brown fat in newborns is located in their back, neck and shoulders. During childhood and adolescence, brown fat scatters around the body. Brown fat in adults is located around the neck, kidneys, adrenal glands, heart (aorta) and chest (mediastinum). How much brown fat is in my body? The amount of fat in your body varies from person to person. You have less brown fat than white fat in your body. In newborns, brown fat makes up 2% to 5% of their total body weight. During childhood and adolescence, the amount of brown fat reduces. As an adult, you have a small amount of brown fat. People who are lean, like athletes, have more brown fat in their bodies than others. Conditions and Disorders What are common conditions that affect brown fat? Several conditions affect brown fat in your body, including: Anorexia nervosa : This eating disorder causes a person to lose both white and brown fat. The condition affects how your body produces energy, and you could have trouble regulating your body temperature. : This eating disorder causes a person to lose both white and brown fat. The condition affects how your body produces energy, and you could have trouble regulating your body temperature. Congenital leptin deficiency : Leptin is a hormone that fat cells in adipose tissue release to control body weight. If you have a leptin deficiency, your body’s fat cells aren’t producing enough of the leptin hormone and you’re at risk of obesity.

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: Leptin is a hormone that fat cells in adipose tissue release to control body weight. If you have a leptin deficiency, your body’s fat cells aren’t producing enough of the leptin hormone and you’re at risk of obesity. Lipodystrophy : This condition affects the amount and distribution of fat tissue (adipose tissue) in your body. Lipodystrophy makes it difficult for your body to store the energy you receive from food. : This condition affects the amount and distribution of fat tissue (adipose tissue) in your body. Lipodystrophy makes it difficult for your body to store the energy you receive from food. Lipoma: Lipomas are lumps of fatty tissue underneath your skin. This condition doesn’t cause pain or health problems, but healthcare providers can remove the fatty tissue if it bothers you. What are common tests to check the health of my brown fat? Your provider will offer tests to check the health of the fat cells in your body through a couple of tests, including: Blood tests like a complete blood count (CBC).