Lack of food

I’m in the middle of watching the Gabon season for the first time (no spoilers plz) and it really stood out to me that near the end some of the survivors were really looking famished. A couple of the men are skin and bones. This season they get rice rations and seem to have ok success getting fish in a local pond. Have they ever had to medically pull people for low weight, do they give more rice if they’re not able to supplement with hunting?