Should parents let their kids eat any snack they ask for, so long as the snack is 100 calories? According to Jenny Kinne, MS, RD, LDN, clinical nutrition specialist at Children’s Hospital Boston, the answer is no. “Because of the portion control aspect, people think of 100 snack packs as a healthy choice,” she says. “But if you look at these products, they tend to be empty calories. There’s no nutrient density, and they lack fiber, vitamins, minerals and protein.” Read more.