> The most compelling argument I've heard about the dangers is that while the total amount of ionizing radiation you receive is small compared to the flight its

> The most compelling argument I've heard about the dangers is that while the total amount of ionizing radiation you receive is small compared to the flight itself, the radiation is chosen such that it doesn't pass through you and more of it is absorbed at the skin. I have a genetic pre-disposition to skin cancer. The total radiation dose may be small, but the type of radiation (ionizing), and the fact that it is targeted at, and fully absorbed by the skin doesn't give me comfort. Should I be concerned? That's a rhetorical question, because in reality we just don't know because no one has studied it. And that's scary. I've opted out ever since these things were introduced, and will continue to do so.