I saw a documentary about chernobyl. And in it, they said that (Long haul) pilots take in an equivelent of 20,000+ x-ray's per year worth of radiation.
Scientists also claimed that radiation is nowhere near as dangerous as what they thought it was. Even to this day chernobyl still is radioactive, the city looks like a scene from a zombie movie, deserted. Scientists have taken some animals which are found in the city, even they have some amount of radioactivity in them, they are normal, they die of old age just like any other animal on the planet.
In this documentary, it states how a company used to make special 'stones' out of plutonium (among other products), that when you are sick, you soak the stones in water, and the following day, drink the water. Remember, plutonium is highly radioactive. Can not remember the name off the top of my head, but, in those days, when you saw the company's brand name on a product, you would associate it with quality, like the top brands of today.