Sentences with phrase «very immature digestive system»
Sara Peternell, a nutritionist and expert in family nutrition, says that «babies have a very immature digestive system, so when we introduce something that's more of a refined grain, that takes a lot more energy from the digestive system to try to break it down and extract the nutrients.»
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Nylabone edible chew treats are best enjoyed by a dog who has all his permanent teeth; they are not recommended for the immature digestive systems of very young puppies.