How Air Conditioning Can Improve Metabolism

(p. 14) Sleep is essential for good health, as we all know. But a new study hints that there may be an easy but unrealized way to augment its virtues: lower the thermostat. Cooler bedrooms could subtly transform a person’s stores of brown fat — what has lately come to be thought of as “good fat” — and consequently alter energy expenditure and metabolic health, even into daylight hours.
. . .
“These were all healthy young men to start with,” . . . [senior author Francesco S. Celi] says, “but just by sleeping in a colder room, they gained metabolic advantages” that could, over time, he says, lessen their risk for diabetes and other metabolic problems. The men also burned a few more calories throughout the day when their bedroom was chillier (although not enough to result in weight loss after four weeks).
. . .
The message of these findings, Celi says, is that you can almost effortlessly tweak your metabolic health by turning down the bedroom thermostat a few degrees. His own bedroom is moderately chilled, as is his office — which has an added benefit: It “keeps meetings short.”

For the full story, see:
GRETCHEN REYNOLDS. “Let’s Cool It in the Bedroom.” The New York Times Magazine (Sun., JULY 20, 2014): 14.
(Note: ellipses added.)
(Note: the online version of the story has the date JULY 17, 2014.)

The academic paper discussed above, is:
Lee, Paul, Sheila Smith, Joyce Linderman, Amber B. Courville, Robert J. Brychta, William Dieckmann, Charlotte D. Werner, Kong Y. Chen, and Francesco S. Celi. “Temperature-Acclimated Brown Adipose Tissue Modulates Insulin Sensitivity in Humans.” Diabetes 63, no. 11 (Nov. 2014): 3686-98.

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