Why does airline food taste bad?
Partly because you lose some sense of taste.
Some studies suggest that it's at least partly due to the decreased amount of time spent outdoors. The government study cited in the question details is from 2001; these two studies came out in 2007 and 2008.
Myopia, Lifestyle, and Schooling in Students of Chinese Ethnicity in Singapore and Sydney (2008) in Archives of Opthalmology: http://archopht.ama-a... (more)