Myth: Mead will help cure allergies.
Fact: Maybe, but not as well as unfermented honey which doesn't work as well as fexofenadine which doesn't work as well as allergy shots. They all work equally well if your allergies are all in your head, though. As does tea, coffee, beer, magic beans, wheat grass juice, multi-vitamins, and watching The Lawrence Welk Show.
Disclaimer: All Thursday Fun Facts are culled from millennia of texts as well as random statements around the internet and they are also made up. They are only facts in the loosest sense of the word (or possibly not at all). Please note the dearth of citations.