For formula-feeding parents, a big worry is that your baby might be allergic to, or intolerant of, cow’s milk formula. This can lead to a lot of trial-and-error of different brands and types of formulas. A new study has suggested some parents are misdiagnosing milk intolerance and may be too hasty when it comes to switching formulas–especially without consulting a health professional.

The researchers found that nearly half of formula-fed babies experience a formula change in the first six months. Could parents be over-reacting? While a relatively small study, it found no difference in infant intolerance to either milk-based or partially hydrolyzed whey protein formula. (The later is a formula modified to remove some of the proteins found in cows’ milk.)

While regurgitation, crying, fussiness, and colic can be signs of intolerances, similar episodes are also normal during early infancy. But anxious parents may mistake these normal episodes as formula intolerance.

The best course of action seems to be talking to a health-care professional, such as your child’s pediatrician. Breast-fed babies can also spit up, have colic, reflux, and/or general digestion discomfort.

Dairy allergies and intolerance are real, but perhaps may not be as prevalent as some parents fear.

[This post originally appeared on Rational Moms.]