You've done nothing to connect obesity rates to sports viewing in this comment. At best, your anecdote connected obesity to being in sports bars.
http://filipspagnoli.files.wordpress.com/2009/12/percent-of-...
I have a hard time believing that obesity is causally related to "college football" or televised sports in general. Except perhaps the fact that it's a sedentary activity, but a sizable chunk of HN probably spends far more time working in front of a computer.
Correlation is not causation, but it is correlation...i.e. things which will affect college football viewing might affect obesity as well. Ergo, if college football becomes too expensive to watch, maybe obesity rates will reduce. This is my hypothesis; only an actual experiment can show if this is true or not.