How can I help Brother Chub?

Hint 1 of 8:

The first thing you should do is check on his medical condition.

Hint 2 of 8:

Use the medical tricorder on him.  McCoy will step in to examine the man.

Hint 3 of 8:

Brother Stephen will give you some information that might be helpful.

Hint 4 of 8:

Go get some of those berries from the cave.

Hint 5 of 8:

If you're having problems with the Klingons, see another question in this
section for more information.

Hint 6 of 8:

Once you have the berries, use them on Brother Stephan, and you'll be told
how to use the synthesizer in the room next door.