[kelnos]

> Does that mean the NFL should shut down? Should they continue to operate as normal?

Saying the NFL should shut down is debatable: at least there we have adults making decisions (which can, after more research is published, be informed decisions) about their health and life.

However, if the incidence really is that high, at the very least high school football should be banned, or modified in such a way that the risk of head injury is diminished, if that's possible.

> Should I feel bad as a fan for watching football? Is it any worse than buying clothing made by child labor from a third world country?

I wouldn't say you should feel bad. NFL players are consenting adults who are being compensated (to some degree, at least) for the risk. We can't say the same of third-world child labor.