A recent study of more than 200,000 people found that LDL, or “bad,” cholesterol was an average of seven points higher in winter than in summer—enough to push some individuals into the range of high cholesterol. The researchers chalk up their findings to a combination of changing weather and habits from season to season. For instance, in the winter we get less vitamin D from the sun (which can improve cholesterol levels), eat more fatty food and exercise less. Plenty reason to say bye-bye, winter blues.

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