google查到的：

Colon Polyps: Symptoms, Causes, Types & Removal (clevelandclinic.org)

Colon polyps are common, especially as you get older. They affect about 20% of adults overall and about 40% over the age of 50, as well as 6% of children. People of all ethnicities and genders are at risk of colon polyps and colon cancer. They’re slightly more common in Western nations, in general.

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• 50歲以上的，40% 有息肉；60 歲以上呢？比例如何？算了，不用查了，別浪費時間。謝謝！ -lawattaction- ♀ (0 bytes) () 06/01/2024 postreply 09:38:36