I think some inflammation is natural and a response to infection, but when your entire diet and lifestyle lead to daily inflammation, I'm guessing it's really bad.
Wear modest clothing, cover themselves up from the sun. Although that can lead to Vit D deficiency when they move to high latitude countries.
And they don't eat bacon, sausages, salami or other salt-cured pork products which are thought to promote some GI cancers due to the curing process forming nitrosamines.