Why does the pill require a prescription in the U.S.?

There are politics to the debate to be sure, but we were more curious about the underlying question.

As it turns out, worldwide, the U.S. is in the minority in requiring a prescription to get the pill. Only about a third of the world's countries limit access, including Canada, Australia and Japan. Countries like China, Russia, and Mexico offer the drugs over the counter.

So what's the rationale behind requiring a prescription?

Proponents say the pill can increase women's risk for blood clots, heart attacks and stroke, especially among smokers and older women. The thinking there is — under a physician's direction, those risks are mitigated.

But many over-the-counter drugs, like aspirin, which can cause stomach bleeding, also have potentially serious risks and don't require a prescription.

On top of that, critics of the current prescription-only system argue women can do the research and decide for themselves whether they're good candidates for birth control.

Critics like The American College of Obstetricians and Gynecologists says unplanned birth rates would likely go down in the U.S. if prescriptions were no longer required to get contraceptive pills.

In 2012, it found 60 percent of women not currently using contraceptives would begin using them if they became available over the counter.

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And consider this: Sales of nicotine replacement therapies went up by 150 to 200 percent the first year they were offered without a prescription.

The Food and Drug Administration would have to approve any changes to oral contraception's prescription-required status. There aren't plans to do that yet, but as we mentioned earlier, there are a couple Republican candidates for Senate who are calling for it to happen.

Cynics will say that's a move to skirt Obamacare requirements that insurance companies completely cover the cost of birth control.

Or as two Health Affairs writers put it, "replace one barrier (ease of access) with another (cost)."

And that's why proponents of change in general say — in order to really improve access to oral contraceptives — both have to happen: Over the counter status as well as preserving the requirement insurance companies cover the cost.

This video contains images from Nate Grigg / CC BY 2.0, Pietro Izzo / CC BY NC SA 2.0, and Daniela Alejandra Robles /  CC BY SA 3.0.