By
Daily Mail Reporter
14:42 EST, 4 June 2012
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14:42 EST, 4 June 2012
Building up a sweat has always been regarded as one of the most effective ways of burning calories and losing weight.
But scientists now claim a totally different approach could help in the battle against obesity – and it doesn’t involve hours of rigorous exercise.
Simple cooling vests which lower the body’s temperatures could help shed the pounds, according to the new research.
No pain, no gain: But new research suggest that cooling the body down, rather than building up a sweat, could be an effective way of losing weight
Scientists say that brown fat – a ‘good’ fat which burns calories – is activated by the cold.
It is found naturally in humans and consumes calories to generate heat. It was known that it could be activated by exposure to cold, in a process called non-shivering thermogenesis.
How to activate brown fat on cue has puzzled scientists – until a team from the Joslin Diabetes Centre tested to see if the drug ephedrine could be used as a trigger.
And while they conclude that it cannot, their work has opened the door to more research into how cold, or agents which mimic the effects of cold, could be used to fight obesity.
Dr Aaron Cypess said: ‘We propose that agents that work similarly to cold in activating brown fat specifically can provide promising approaches to fighting obesity while minimizing other side effects.
‘At the same time, we now know that ephedrine is not the way to do it.’
Growing problem: Obesity is on the increase in the developed world
For the study, the team gave participants injections of either ephedrine or a control saline solution and asked them to wear ‘cooling vests’ with water at 57 F pumped into them. Their fat activity was then measured.
Researchers found that brown fat was the same following both the ephedrine and saline injections. However, after the subjects wore the cooling vests for two hours, their brown fat activity was stimulated significantly.
Both interventions – ephedrine injections and the wearing of the cooling vests – did result in the same number of calories being burned, Dr. Cypess noted.
He said: ‘But we found that ephedrine was not using brown fat to do it. This is the first time it has been found that ephedrine does not turn on brown fat.’
Both methods had effects of the sympathetic nervous system – which activates the fight or flight response – such as increased blood pressure, but only the cold activated brown fat.
Dr Cypess said harnessing the cold effects could help reduce calories without the side effects associated with ephedrine.
He said: ‘Mild cold exposure stimulates (brown fat) energy expenditure with fewer other systemic effects, suggesting that cold activates specific sympathetic pathways.
‘Agents that mimic cold activation of (brown fat) could provide a promising approach to treating obesity while minimizing systemic effects.’
One method may be simply to design cooling vests that people can wear to help them lose weight.
A future study will have subjects wear the vests for several weeks to see what happens, Dr. Cypess said.
He said: ‘Will they get the same health benefits they would have seen with several weeks of exercise? That’s the billion dollar question.’
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Ian, Sydney, 05/6/2012 05:35 It’s even easier than that, just exercise for 20-30minutes a day at home and don’t eat too much, problem solved. But for far too many that’s far too much to ask.
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Bring on the ice cream.
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I agree with Ian in Sydney. The hardest thing about doing any exercise – including going to the gym – is actually getting dressed and getting out of your front door. As soon as you leave the home to go swimming, walking, cycling, to the gym, your body automatically takes over and you don’t need to think about it. I sometimes go to the gym at 9 p.m., absolutely exhausted by work, but as soon as I get there, my body carries out the exercises automatically, I work up a sweat and I leave an hour or so later, feeling really good.
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Without having to go to the gym. I cannot believe the lengths people will go to before they’ll ‘go to the gym.’ It’s hilarious actually. Believe me the gym doesn’t bite, it’s actually fantastic when you get in to it. I work long hours, have kids but I still manage to get to the gym for an hour 2-3 times a week and I feel fantastic. Get off your bums people…!!
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The way gas and electric prices are going up, you wont need to buy a cool jacket to loose weight.
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Actually, politicians and jobsworths are the ones who should have the easiest time losing weight. Just give them an enema.
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