Alcohol and common cold

“The frequency, not the amount, of alcohol intake was significantly related to lower prevalence of self-reported common cold episodes in Japanese men.”

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3533961/

I never drink… and speculating here, but drinking alcohol may be seen as a hormetic stressor to the bodies immune system, providing a bit of resistance to the common cold. On the other hand, there may be many other negative effects that outweigh this positive.