News reports about a new medical study trumpet headlines such as these:
- “Video gaming leads to surge in rickets“
- “Prolonged gaming blamed for rickets rise — Is it time to stop the poop-socking?“
But the study itself does not mention games or gaming or computers. See for yourself (though you’ll need a subscription to get the full version): 
“Diagnosis and management of vitamin D deficiency,” Simon HS Pearce and Tim D Cheetham, BMJ, January 11, 2010;340:b5664. (Thanks to Scott Langill for bringing this to our attention.)