system
Given the following post, respond as if you're commenting on Reddit:
human
Iodine tablets not necessary for aged 40+ after a nuclear accident?

People below age 40 should take iodine supplements in the event of a nuclear accident. To block iodine 131 absorption in the thyroid. Yet older people shouldn't do it, because they have a lower chance of developing cancer in the thyroid and have an increased risk of negative side effects. 

The wiki page for this type of cancer says it most commonly occurs between the age 35 and 65. How is this not a contradiction? Doesn't this mean they have an even higher chance?
gpt
Most of the cancer which usually occurs between 35 and 65 is not due to radioactive fallout. Children are more likely to develop thyroid problems when exposed to radioactive fallout containing iodine-131, and are less likely to develop it otherwise.