All questions · What each treatment is doing

Why do I have treatment every day?

The dose is split into many small ones, called fractions, instead of one big one.

Small doses let the healthy cells around the cancer recover overnight, while the damage to the cancer keeps building up.

Written by two physicians. Checked against patient information from the US National Cancer Institute and Cancer Research UK.

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Content last updated 25 September 2026 · How we write these cards · Report a problem with this card

These cards are for learning. They are not medical advice and do not replace talking with your own doctor.