Collapsed from dehydration after playing Modern Warfare 3 on Xbox for 4 days

The Columbus teen collapsed and was hospitalized Tuesday after becoming severely dehydrated. His mother says he emerged from his bedroom during the four days only to pick up snacks or take a quick shower.
The boy was so engrossed in playing Modern Warfare 3 on Xbox that he made himself sick.

What in the name of God was his mother doing those 4 days???

source: washingtonpost