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Obesity Center

Brown Fat: A Significant Metabolism Booster

November 23, 2016 By Namita Nayyar (WF Team)

Brown adipose tissue (BAT), also known as brown fat, is one of two types of fat humans and other mammals possess in their body. It is a healthy fat, when fully activated, brown fat generates three hundred times more heat than any other tissue in the body. Just two ounces of brown fat appear capable of burning several hundred calories per day—the equivalent of a 30-minute bout of exercise.

BROWN FAT

 

A recent study published in the journal Nature Communications under the supervision of Professor Francesc Villarroya, from the Department of Biochemistry and Molecular Biomedicine and the Biomedical Research Center Red-Fisiopatología de la Obesidad y Nutrición (CIBEROBN) of the Institute of Health Carlos III, disclosed that omega-3 fatty acids are able to stimulate the activation of brown and beige adipose tissues through a specific receptor (GPR120), which enables the release of the hormone FGF21 (21 fibroblast growth factor). This hormone, built by the adipocyte, is a molecule that regulates lipid glucose and metabolism and therefore, it is an effective target for the action mechanism of Omega-3.

Difference between White & Brown Fat

Fat cells within the body can be categorized into white and brown fat.

  • White adipocytes (white fat cells) have a single lipid droplet, brown adipocytes on the other hand, contain many small lipid droplets, as well as a very high number of iron-containing mitochondria. Brown fat gets its dark red to tan color from its high iron content.
  • Brown fat has more capillaries than white fat, because of its higher oxygen consumption. Brown fat also has many unmyelinated nerves, providing sympathetic stimulation to the fat cells.
  • White fat is the result of storing excess calories. When we consume too many calories, the body converts them into a contingency energy reserve in the form of white fat.
  • Brown fat generates heat by burning calories. When it is cold, brown fat’s lipid reserves are depleted, and its color gets darker.
  • Brown adipose tissue also acts as an endocrine organ and can secrete factors that activate fat and carbohydrates metabolism.

BROWN FAT

Humans and mammals with higher levels of brown fat take longer to start shivering from the cold, than those with lower levels. Brown adipose tissue levels are higher in a child than in older humans.

Magnetic resonance imaging (MRI) is a better way to identify deposition of brown fat in the body.

Sources of Omega-3 Fatty Acids

World’s Healthiest Foods Rich in Omega-3 Fats

Food

Flaxseeds

Walnuts

Sardines

Salmon1

Beef

Soybeans

Tofu

Shrimp

Brussels Sprouts

Cauliflower

Cals

 

75

196

189

158

175

298

164

135

56

29

DRI/DV (%)

 

133

113

61

55

46

43

28

14

11

9

DRI/DV: Is the amount of omega-3 fats contained in one serving size of the food, the percent Daily Value (DV%) that this amount represents, the nutrient density that we calculated for this food and nutrient, and the rating we established in our rating system.



Disclaimer
The Content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.

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