Based on the story that Tsukuyomi killed Ukemochi no kami (the god of whole grain) with a sword in "Nihon Shoki," this god is generally considered to be male; however, there is no description in "Kojiki" or "Nihon Shoki" that determines the gender of this god.
日本書紀に保食神を斬り殺す話が存在する為、一般には男神と考えられているものの、記紀の中では性別を決定づけるような描写はない。