Once you have level three fishing, there is enough food to support THREE tribes at once LOL! I just stick the new adults on learning farming and concentrate the older ones on healing and parenting ... I have so many well rounded villagers proficient in all categories especially healing that immediately upon hearing a sneeze, and even BEFORE that, you can see everyone running in the same direction toward the sick person no matter where they are

.... who needs a hospital? LOL
I had over 42,000+ food when I figured they could relax and do other things ...