system
Given the following post, respond as if you're commenting on Reddit:
human
[MCU] Do the parts that fall off the Hulk revert back to Banner size?

Like his fingernails, hair, and teeth?

(How does dead tissue like fingernails grow in size anyway?)
gpt
Most likely they do not. There is an else worlds tale where only the survivors of an apocalypse event are the Hulk and a swarm of mutant cockroaches. These roaches seem to rely on the Hulk as their primary food source as well. 

So if Hulk parts did revert there is no way the swarm would be able to sustain itself, since at this point Banner is a frail old man.