Previously believed to disappear in adults, brown fat is present in babies and animals and is specifically designed by the body to be highly thermo-reactive.
It's purpose in little'uns is to ensure that that they can generate body heat before their body has learnt to shiver.
How is it different to white fat?
Brown fat appears to have developed from the same stem cells as muscle, unlike white fat.
It also requires more oxygen and reacts directly to changes in temperature.
What does this mean for weight loss?
Scientists have discovered that, although most of it is lost by adulthood, some can still be present in the neck and chest and could in fact contribute to a boost in white fat burning.
It could provide an answer to weight loss as it takes calories from normal fat and burns it in order to heat the body.
How to we develop more brown fat?
A recent experiment found that sleeping in a cold room could in fact increase your brown fat levels and therefore increase your metabolic rate.
However, these are the very early stages of research and some experiments in mice have found some instability in over production of brown fat.
Watch this space.
Foods to boost your metabolism
LOSE WEIGHT JUST BY SLEEPING IN A COLD ROOM
GET HEALTHY WITH A DIET LIKE JESSICA ALBA
MORE HEALTH AND WEIGHT LOSS INFO