Facebook mom groups perpetuate this pseudoscience. You are a young mom and want to commisserate with people, but half of them will scold you for things totally not scientifically sound.

I recall posts suggesting cow’s milk would poison your baby if used before 1 year old, yet cheese or yogurt was no problem. I went down the rabbit hole and it was essentially a bastardization of recommendations that breast milk or formula should be the bulk of your baby’s diet rather than cow’s milk, not that cow’s milk was poison.

Another time they scolded a mother for making a fruit smoothie, because they felt she could have overdosed on vitamin A. I’ll point out that dietary vitamin A mostly has to be converted from beta carotene to its active form, so it is incredibly hard to overdose unless you are using vitamin supplements. And yet fruit smoothie mom was in trouble, but eating 10 Big Macs was no big deal, as the magic guidelines never said no.