One of the current hot button issues concerns Daniel Hauser, a young Minnesotan suffering from Hodgkin's Lymphoma. The issue is that Hauser is refusing chemotherapy, which studies show have an excellent chance of curing him completely, in favor of untested homeopathic remedies that will almost surely result in his death.
This brings into contrast a classic debate over whether or not the government has a right to interfere in our lives, even when our lives are at stake. Since suicide and euthanasia are against the law in most states, clearly the general consensus is yes. In many cases, such as the right to make informed medical decisions, the situation is not so cut and dried. (By the way if you claim to be "pro-life" and favor banning abortions but think that Colleen Hauser should be free to roll the dice with the health of her child, you are a raging hypocrite.)
What I think is cut and dried is that in the case of children, the medical establishment should prevail. It might be better for society if it didn't, Darwinism in action and all that, but the fact is that the 13 year old Daniel Hauser, who is operating under the warped belief that he is some kind of "medicine man" is simply not old enough to know any better. When he is in his final moments screaming in the throes of cancer-driven agony, he cannot "take it back" and ask for the medicine. It will be too late. For the parents and libertarian advocates to turn this child into a political issue is self-serving and pathetic.
This is also why I hate Jehovah's Witnesses, by the way. Not letting your kids have birthday parties is merely cruel, but refusing them life-saving blood transfusions is just sadistic.