Why does exposure to radiation cause cancer/leukemia? sometimes even decades later
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Radiation is tiny particles which shoot through out bodies, it can hurt the building blocks of our body, called DNA, when they hit it, which determins how we grow and stay healthy. When our DNA gets hurt, it can sometimes cause cancer, which is a mutation.
If you think of DNA as a blueprint, or instructions for how our body works, a mutation is like a spelling error, or something drawn wrong on a blueprint.
Sometimes the cancer can take a long time to show up, even many years later, because it takes time for the hurt DNA to cause the cancer.
Different kinds of radiation can hurt us more or less, and if we get a lot of radiation, it can make us very sick right away.
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