It has been pretty hot in my neck of the woods over the last week. It has been roughly 80 degrees in my room at night. To try to stay comfortable and get to sleep I have been running two fans. One in the window and one pointed at my bed. Today I woke up with a headache, runny nose, and sore throat. Someone was telling me that if you have a fan blowing on you at night it will make you sick. It seems a common meme on the internet Is that true?


1 Answer 1


There is inconclusive evidence.

The Cochrane Review found there is inconclusive evidence to support whether or not electric fans may cause an adverse effect on one’s health1.


1Electric fans for reducing adverse health impacts in heatwaves

  • 2
    +1: I love that there was a Cochrane Review on this. It never occurred to me for a second to look there.
    – Oddthinking
    Nov 9, 2015 at 7:11

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