By the way, doctor: Seasonal swings in blood pressure

Published: March, 2014

Q. My systolic blood pressure is 40 points higher in winter than in the summer (160–180 versus 120–140 mm Hg). Do the seasons affect blood pressure?

A. I'll admit you've got me puzzled. Here are the possibilities I've come up with: Two are pretty obvious and straightforward, one's a little far out.

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