salam to you, yellow cab.
No, no easy way out with the religious card on this one.
I deeply respect the religion, but i respect my duty towards our customers plus their and our lives just as much when I'm in charge. And I truly hope that fellow aviators do the same when I'm in the back of their tube.
Let us for a moment imagine a religion who worships a few pints every happy hour ..... We might also respect their beliefs, but nevertheless uphold the very sensibel regulation, that when they follow their religion, they should neither drive and much less fly as actif crew. If they would try to escape the discussion and want all the world to accept their faithful actions based on religious motifs, we all agree, we wouldn't enter the matter and rightfully discard such reasoning. I honestly don't see any reason why the same logic should not apply to long fasting, as it has similar degrading effects as alcohol.
I know it is a highly sensitive matter and that may be the reason that no airline and even less ICAO is raising it - they all play the ostrich and just hope nobody raises the matter and it will pass without accident.
I hoped that here, on a professional pilots meeting spot, some anatomic logic that respects religion, but highlights some physical limits, raising this topic could have started a discussion and even maybe some thinking.