We are always looking for reasons why it becomes harder to lose weight and keep it off as we get older. Another reason advanced regarding this is the role of white fat versus brown fat that we all have in varying degrees. Brown fat cells, labeled that because they contain the most mitochondria, the pigment that binds iron and gives them their color.
http://ift.tt/1pEHudr
http://ift.tt/1pEHudr
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