NPR Books asks, “Was Gollum Done In By Vitamin D Deficiency?” The query is prompted by a new paper in the Medical Journal of Australia, positing that creepy cave-dwellers (rarely the hero) are often victims not of motiveless malignancy, but a lack of sun. “Systematic textual analysis of The Hobbit supports our initial hypothesis that the triumph of good over evil may be assisted to some extent by the poor diet and lack of sunlight experienced by the evil characters … aversion to sunlight … may lead to vitamin D deficiency and hence reduced martial prowess.”