A new study suggests one reason heart-related deaths go up in winter is because the cold causes brown fat to accelerate the build-up of plaque in blood vessels. Researchers from Sweden and China, who made this breakthrough discovery while studying mice, write about their findings in the July 2nd online issue of Cell Metabolism. We have known for a while that deaths from cardiovascular diseases go up in winter, and we have put this down to the fact that we tend to be more sedentary in winter...
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