What is the diet of fruit doing to the boys In lord of flies?

In "Lord of the Flies" by William Golding, the boys' diet of fruit contributes to their physical weakness and lack of proper nutrition. They become increasingly malnourished and their cognitive abilities may be impaired due to the lack of a balanced diet with essential nutrients. This dietary deficiency can also impact their ability to think clearly and make rational decisions as they struggle to survive on the island.