Spinach

[We'veBeenHad]

My mother-in-law insists that spinach is "bad" for you because, she says, she read or saw on TV that the strands of spinach can "wrap themselves" around your intestines and cause blockages. Supposedly even if that doesn't happen, the nutrients IN spinach can not benefit anyone because they aren't absorbed. She says that "they" say it's especially unhelpful for elderly people, like her, and that it can cause even more harm for older people.

Considering she's a big believer in lots of ULs, I don't buy it. At any rate I've never found anything else saying that spinach wraps around the intestines and chokes them off; that sounded really bizarre to me.

Anyone have decent sources? I haven't been able to find any to combat that seeming stupidity.