Wholesome

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Middle English: probably already in Old English(see whole, -some1).

wiktionary

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From earlier holesome, from Middle English holsom, holsum, helsum, halsum, from Old English *hālsum, *hǣlsum, from Proto-Germanic *hailasamaz, equivalent to whole +‎ -some. Cognate with Dutch heilzaam, Icelandic heilsamur, Norwegian Nynorsk helsesam, Swedish hälsosam(“wholesome”).

etymonline

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wholesome (adj.)

c. 1200, "of benefit to the soul," from whole (adj.) in the "healthy" sense + -some (1). Physical sense first attested late 14c. Related: Wholesomely; wholesomeness. Old English had halwende.