Word: browne
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...Identifying the presence of brown fat is one thing, but activating it to burn more glucose is another. Two studies in the New England Journal of Medicine, including Enerbäck's, confirmed that brown-fat cells become more active in the cold - that is, when study participants needed to boost their body temperature. Enerbäck saw increased activity when he plunged one foot of each volunteer into an ice bath while in the scanner. In a separate study, scientists at Maastricht University Medical Center in the Netherlands also saw upticks in brown-fat activity in subjects...
...forth to actually pinpoint whether the PET glucose-uptake areas corresponded to true brown-fat tissue, and I think we more or less proved the case," says Enerbäck, who found that those mystery cells in the neck expressed the same proteins as brown...
...before we all turn our thermostats down or consider joining the Polar Bear Club, can brown fat actually cause weight loss? Brown fat may indeed shift the balance of calorie intake and expenditure - allowing a person to burn more calories with the same amount of consumption - without the chore of going to the gym or sweating through a workout. "We have very few interventions aimed at increasing energy expenditure," says Dr. Franceso Celi, a clinician at the National Institute of Diabetes and Digestive and Kidney Diseases at the National Institutes of Health. "And here we have a tissue that works...
...third study in the New England Journal of Medicine, researchers found that leaner people tended to have more brown-fat deposits than overweight or obese individuals. Interestingly, women were twice as likely as men to have active brown fat, according to the study, conducted by Dr. Ronald Kahn and his colleagues at the Joslin Diabetes Center, Massachusetts General Hospital, Beth Israel Deaconess Medical Center, and Brigham and Women's Hospital...
...Still, the findings don't necessarily mean that activating brown fat leads to a trimmer waist. For one thing, the body is especially good at maintaining equilibrium, which is why a boost in calorie-burning can often trigger a hunger signal and prompt people to eat more to make up for the loss. And even if drug companies could find a way to activate brown fat safely, that excess activity could throw off other metabolic systems and damage your health. After all, the people who have the most active brown fat so far are those with cancer and hyperthyroidism...