It takes a real man to get the flu.
At least that's what a new Stanford study says.
The study reveals that men with higher levels of testosterone have a weaker immune system than both women and men that are generally considered weaker.
A team of researchers drew blood from 37 men and 54 women, then studied how a flu vaccine affected the proteins and cells in each subjects immune system.
"There are marked differences between the sexes in their immune response to infections and vaccination, with females often having significantly higher responses," reads the study, posted on Proceedings of the National Academy of Sciences.
"Men are suffering!" Stanford immunology professor Mark Davis told NBC News. "They aren't as resistant. Women are superior. There's no way around it."
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