Tummy seems in distress - this should protect you (6,6)

I believe the answer is:

immune system

I'm a little stuck... Click here to teach me more about this clue!

'should protect you' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.

'tummy seems in distress' is the wordplay.
'distress' indicates anagramming the letters.
'tummy'+'seems'+'in'='tummyseemsin'
'tummyseemsin' anagrammed gives 'IMMUNE SYSTEM'.

'this' acts as a link.

Can you help me to learn more?

(Other definitions for immune system that I've seen before include "Body's infection-fighting set-up" , "Body's protection against diseases" , "The body's natural defence" .)

I've seen this clue in The Irish Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.