Why do we avoid eating fish and meat together?<a href="#_ftn1" name="_ftnref1">[1]</a>
One must beware from eating meat and fish together due to that it can cause leprosy.<a href="#_ftn2" name="_ftnref2">[2]</a>
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<a href="#_ftnref1" name="_ftn1">[1]</a> Michaber Y.D. 116:2; O.C. 173:2 “As it is difficult for Davar Acher, and Danger is more severe than a prohibition”; Admur Shemiras Guf Vinefesh Halacha 9; Pesachim 76b “Due to it causing Reiach and Davar Acher”; See Divrei Malkiel 2:53
<a href="#_ftnref2" name="_ftn2">[2]</a> Is this danger natural or mystical: Some Poskim rule that this danger is natural and not mystical. [Chasam Sofer Y.D. 101; Divrei Malkiel 2:53] However, other Poskim rule that is mystical and not natural. [Tiferes Tzevi 91]

Shulchan Aruch HaRav | Why do we avoid eating fish and meat together?

Why do we avoid eating fish and meat together?[1] One must beware from eating meat and fish together due to that it can cause leprosy.[2] _____________________________________________________ [1] Michaber Y.D. 116:2; O.C.