tuberous

Some tribes figured out that some tuberous plants can be replanted and will regrow after the tuber has been harvested and that's it.

But we always got more leaves off our sweet potato than tuberous roots due to mammals eating the roots.

Consider the following: We still cannot treat many well understood diseases, including tuberous sclerosis, allergies, asthma, etc.

We could look at the diet of the species most closely related to us chimps which is mostly fruit nuts, tuberous roots, insects, and opportunisticly meat (about 2%).

(Short version: use fat and starchy/tuberous food to have sustainable/stable blood sugar levels).

People who are born with certain syndromes, such as neurofibromatosis, von Hippel-Lindau disease, Li-Fraumeni syndrome, and tuberous sclerosis, have an increased risk of brain tumors.

As a hypothetical, to bring it back to humans, and divorce it from reproduction which might have emotional baggage in many peoples reasoning, imagine a person with a tuberous growth that was removed, but we can cause it to continue to grow outside the body.

>As a hypothetical, to bring it back to humans, and divorce it from reproduction which might have emotional baggage in many peoples reasoning, imagine a person with a tuberous growth that was removed, but we can cause it to continue to grow outside the body.

TL;DR You say "a starchy, tuberous crop from the perennial nightshade Solanum tuberosum L.", I say potato.