The scientific record on ELF is less reassuring, says Larry Anderson, a researcher at Pacific Northwest Laboratories (PNL), Richland, WA.
Other studies point to slightly increased rates of leukemia and brain cancer for people occupationally exposed to ELF, such as electricians and telecommunications workers.
There was also an elf balloon tent where children were shown how to make their own elf balloon hats and other balloon models.
They were also invited back at the end of the event at 3pm to take part in an elf flash mob recital of the elf song they learned in elf reception.
For the budding elf, there was no other place to be than Bridgend town centre, where the annual Christmas festival gave them the chance to learn the elf song, to create their own Christmas cards and crafty presents, in lessons organisers had dubbed "elf sterity", and also get to grips with the "elf and safety" considerations of training a reindeer.
Entertainment on Adare Street yesterday was provided by an elf ukulele band, while children also got to take part in elf hula and elf graffiti, a make-and-take session where a graf-fiti artist helped budding elves to make their own individual canvases into Christmas presents and artwork.
But such special use is usually regarded as an exception; on the other hand, Tolkien's disdain for fairy as a synonym of elf is often argued, on the basis of its foreign, French origin and its fanciful connotations (see above, and also Shippey, The Road to Middle-earth [Road] 56-7; Burns 23; Spangenberg 186).
There faerie (in the abstract sense of "magic") occurs in complement with elf, used for the magical creatures; e.g.