Well of course there are negative health effects to pollution. The problem is, zero pollution can only be achieved by not having power. Well if we commit suicide, and thus can shut off all the power plants, then we can achieve zero pollution and thus zero health effects.
At some point we have to accept that human existence causes pollution. We can fight over where the line should be drawn, which is the question.
How many people have died because of air pollution? Not how many died according to some estimate based on mathematical formulas. How many people died, and you can say it wasn't because they were smoking pot, or eating McDonald's, or watching too much TV.
How many people can you say "John Doe here died from coal power plants"?
And the answer is zero.
At best you can say people who had a pre-existing condition, had those conditions aggravated by low levels of pollution.
So what we're talking about is simply assumption. You are assuming such and such a number of people died from such and such pollution.
You can't point to an actual count of the specific number of people with a toe tag "Cause: Coal power plant".
And this is why some people are getting bent about how the EPA calculates these fictional numbers of deaths. Because they are using this fiction to push an agenda.