Care and Feeding is Slate’s parenting advice column. Have a question for Care and Feeding? Submit it here or post it in the Slate Parenting Facebook group. Dear Care and Feeding, My husband and I taught our children about eating healthily, but we’ve never tried to demonize any foods, focusing on how anything can be healthy if eaten in moderation. We don’t tend to keep a lot of sweets in our house. I’m an immigrant from a country noted for its sweets, but diabetes runs in both my husband’s and my own family, so we keep such things to a minimum. Recently, my daughter fell ill and had to stay…