— But perhaps, just as wine is sometimes bad for the head and for the body, so, words of Torah; it is, therefore, written (Song of Songs 1:3) "For fragrance Your oils are good; poured-forth oil is Your name." Just as oil is good for the head and good for the body, so, words of Torah, as it is written (Proverbs 3:8) "It is healing for your navel and marrow for your bones," and (Ibid. 4;9) "It will give your head an adornment of grace; a crown of glory will it accord you." Words of Torah are compared to oil and honey, viz. (Psalms 19:11) "and they are sweeter than honey and the honeycomb."
Can the Words of Torah Ever Be Harmful
Sifrei Devarim 48:7