Brown fat works in an alternate manner to other fat in your body and delivers heat by consuming sugar and fat, regularly because of cold.
Experts say people who drink more than four cups of coffee a day may want to cut back if they are suffering side effects such as headaches, insomnia and nervousness.
Using a well-recognized mouse mesenchymal stem cell (mMSC) model of browning, the researchers first confirmed that caffeine could directly enhance UCP1 function, and so ramp up mitochondrial activity and lipid handling.
From the School of Medicine at the University of Nottingham, Professor Michael Symonds stated that drinking some espresso can enable you to get more fit by animating brown fat, which consumes calories to produce body heat, specialists have found.
Brown adipose tissue (BAT), or "brown fat" (also known as "good fat"), can generate heat and metabolize macronutrients (i.e. glucose-heavy foods like honey and dried fruit) by burning calories.
The study is one of the first to be carried out in humans to find components which could have a direct effect on "brown fat" functions, which plays a key role in how quickly we can burn calories as energy.
Initially, brown fat was only attributed to hibernating mammals and babies; however, in the recent years, it was discovered that adults can have brown fat too.
Those with a lower body mass index tend to have a higher amount of brown fat, and Mr Symonds said the new findings could be significant in helping to tackle obesity and diabetes. Caffeine exposure induces browning features in adipose tissue in vitro and in vivo. "However, until now, no one has found an acceptable way to stimulate its activity in humans".
Scientists are uncertain if it's the caffeine in coffee that's responsible for this, or another ingredient. He included that it was this was the main research to indicate how espresso affects dark colored fat in people. We are now looking at caffeine supplements to test whether the effect is similar.
Drinking coffee could activate the body's fat-fighting defenses, a discovery that could have potential implications in the battle against obesity and diabetes. Once they had found the right dose, they then moved on to humans to see if the results were similar.
They using thermal imaging technology, they tested it on humans.