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If someone has gum disease and his gums frequently (or always) bleed when he eats, is he restricted to a liquid diet on Shabbos and Yom Tov?

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some sources, perhaps. torah.org/advanced/weekly-halacha/5761/kedoshim.html – Menachem Jun 18 '12 at 21:39
up vote 6 down vote accepted

The recently-published sefer Orchos Shabbos suggests that one whould be allowed to eat in this situation, based on Dagul MeRevavah (quoted by Mishnah Berurah 340:17, concerning the consumption of food with words written on it) who rules that a psik reishah d'lo nicha lei (unwanted consequential act) is allowed in a case where the result is damaging (m'kalkel) and the act is done in an unusual manner (k'lachar yad). He cites Rav Nissim Karelitz shlit"a as being lenient regarding this issue.

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It sounds like the basis is a derabanan with tarti l'rei'usa. How does it play out in this case where mekalkel is chayav? Now that you mention a psik reisha d'lo nicha lei, it should be very easy to permit this case since many poskim hold that that is mutar straightaway. – YDK Aug 29 '10 at 15:28

Perhaps it's a shvus (doesn't want it) d'shvus (netilas neshama isn't done with food) bemakom tzaar or mitzva. Although I don't know if that's the case when he's in pain/not oneg anyway.

There's probably a better answer.

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"Netilas neshama isn't done with food" - why does that make it a shvus? – Dave Aug 29 '10 at 14:10
It's the equivelent of your k'lacher yad. It make the melacha a derabanan. – YDK Aug 29 '10 at 15:02
What you said is pretty close to what I found in Orchos Shabbos, except that his logic seems to apply even where there is no tzaar or mitzvah (due to the element of m'kalkel?). – Dave Aug 29 '10 at 15:22

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