Why do Catholics fast an hour before mass or receiving the Eucharist whichever it is?

[Guest1]

What’s the purpose and reason for fasting?

 

[TheLittleLady]

Before receiving the Eucharist, it is out of respect.

 

[JamalChristophr]

I have to admit that I could not give you a good answer, a very thorough answer, but this short EWTN article explains it extremely well.

https://www.ewtn.com/library/ANSWERS/PREPPEN.HTM

You ask a very good question. Thanks for asking it.

 

[Seagull]

Fasting, even for one hour before mass, brings me clarity.
I ALWAYS fast before mass - usually 12 - 15 hours before.
Then one hour afterwards.
For years and years I’ve done this routine.

 

[Kei]

We believe the Eucharist is the Body Blood Soul and Divinity of Jesus Christ (in addition to very deep other things), and thus receiving the Eucharist is a reverent occasion. So, fast.