This will have to become a year-end tradition: The British Medical Journal late December edition, which seems to always feature research from out on the edge.
Last year was the first time I ran across this fun site. Last year at this time, the BMJ included studies looking at the effect of the shape of a glass on how much alcohol people pour, and at the effects of reading Harry Potter on accident-prone kids.
This year, the December 23 edition includes a paper entitled "Sword swallowing and its side effects."
A finding? "Major complications are more likely when the swallower is distracted..."
And: "Sword swallowers without healthcare coverage expose themselves to financial as well as physical risk."
By the way, did you know that there is a Sword Swallowers Association?
(BIG THANKS TO RESOURCESHELF, WHICH OFTEN SERVES UP THESE SORTS OF GEMS)