According to a study published in JAMA Pediatrics, kids given whole milk are less likely to gain weight.
"There's never been such a strong evidence base for these recommendations," says Dr. David S. Ludwig, an endocrinologist at Boston Children's Hospital.
"We're not arguing that milk should be eliminated from the diet, but that a broader range of recommendations might be more appropriate."
It seems when children drink skim, they're less satisfied and therefore more likely to eat snacks, particularly the carbs that cause blood-sugar levels to spike, which leads to more hunger, more snacking and more weight gain.
Said Dr. Ludwig, "We just don't see any benefit for focusing on reducing fat."
And neither should you.