It's possible Judaism's ban on eating pork is related to the hygiene environment of that time, but even though the hygiene environment has improved to be good today, there's just no leeway about it, and Jews aren't allowed to eat pork and that's the way it is.
猶太教禁食豬肉好可能同當時衞生環境有關，但係就算而家衞生環境改善都好，都係冇走盞，唔俾猶太人食豬肉就係唔俾食。