[dalebert]

they also had many other diseases and very bad teeth.

[Signalman]

they also had many other diseases and very bad teeth.

Actually their teeth were usually in good condition, due to the lack of sugar in their diet. But they had gum disease because dental hygiene was virtually non-existant.

[ketsu]

they also had many other diseases and very bad teeth.

AFAIK bad teeth comes from refined sugars. berries, nuts and lean meat isn't going to cause much decay.