There is very little to be gained, health wise, from exploiting oil sands for energy. The environmental programs affect almost everything, causing air, water, and land pollution. In places where oil sands have been tapped, there are cancer rates astronomically higher than anywhere else in the region. Let's work on alternative energy that won't kill us instead.
No, oil sands are not bad for the human health, because oil exists natural in the world. Oil is a tremendous resource. Humans are supposed to have dominion over the earth, and that means using the resources that are available to us in a good way. Oil sands are not harmful, as long as you use oil for energy and not to drink.