If you have any doubts about the dangers of radiation then recent findings of mutations in butterflies that were exposed to the fallout from the March 2011 Fukushima disaster in Japan should convince you.
As reported on PysOrg, Joji Otaki, associate professor at Ryukyu University in Okinawa, Japan, bred three generations of pale grass blue butterflies mating one exposed and one non-exposed butterfly in each breeding and found that despite the mixing of "clean" genes" with damaged genes 52 percent of the final generation's offspring displayed abnormalities. In other words, the impact of mutated genes was enormous and far exceeded researchers' predictions.
So, if you're unlucky enough to live somewhere near Fukushima and particularly if you're even more unlucky enough to be one of the workers cleaning up the mess then protecting your genes would seem to be a really good idea and Yamamoto Corporation of Osaka, Japan, has the answer: Radiation-proof underwear.
In fact, Yamamoto has a whole line of anti-radiation suits but the underwear, made of lead impregnated fabric (priced around $840) is more your every day kind of protection. Yamamoto also offers a radiation-proof wetsuit (for about $1,080) for people who have to go swimming even when they know the water might be contaminated. Who the latter might be is hard to imagine or understand.
Yamamoto Corporation's radiation-proof underwear and wetsuit
[Update] Long time reader @Miles_B tweeted: @quistuipater Love the lead codpiece - no warrior in the dystopian future leaves home without one.