Eli5: How does radioactivity kill/mutate the body?

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Apologies if the tag is wrong!

From what I understand, the radiation doesn’t do squat untill it’s ionized. The way it was explained to me is that the Radiation is the knife, while the ionization is the hand weilding the knife.

So how does it affect the body? I know it does something to our DNA but what does it do specifically?

Bonus Question: What did scifi writers assume Gamma Ray’s would do to Bruce Banner to make him the Hulk, as opposed to what it does IRL and just… kill you.

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Anonymous 0 Comments

Fundamentally, the dangerous ionizing radiation is actually tiny bits of the atom breaking off with incredible speed and flying in all directions.

These tiny particles are moving fast enough that they can blast chunks of your DNA apart if they strike it. Sometimes your body can repair the DNA, sometimes it can’t. Sometimes it comes back together in an altered state. The more this happens, the more your Cancer risk goes up. If enough of these particles bombard you, all at once, they can do so much damage that whole organs die.

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