Brown Fat, White Fat, Good Fat, Bad Fat

Brown Fat, White Fat, Good Fat, Bad Fat

Brown Fat, White Fat, Good Fat, Bad FatPosted on March 26th, 2013 by Dr. Francis CollinsFat has been villainized; but all fat was not created equal. White fat stores energy as large fat droplets, while brown fat has much smaller droplets and is specialized to burn them, yielding heat. Brown fat cells are packed with energy generating powerhouses called mitochondria that contain iron—which gives them their brown color. Comparing the active genes in brown and white fat cells, they discovered Ebf2 is present in larger quantities in brown fat. The lack of brown fat apparently sends a signal via the brain to the recruitable fat cells, telling them to make the switch and transform into brown fat.

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