Free Pediatric Nutrition Exam Questions That Helps Candidates Pass

The most common barriers to successful breastfeeding are lack of maternal knowledge, poor support, and cultural misconceptions. Proper education on latch techniques, frequent feeding, and reassurance increases breastfeeding success. Maternal age, vitamin supplementation, or protein intake generally do not prevent breastfeeding if mothers are supported and encouraged.

Phenylketonuria (PKU) is a genetic disorder caused by deficiency of the enzyme phenylalanine hydroxylase, leading to accumulation of phenylalanine, which is toxic to the brain. Management requires a strict low-phenylalanine diet, often with special medical formulas. Galactosemia requires avoidance of galactose, cystic fibrosis needs high-calorie enzyme-supported diets, and celiac disease requires a gluten-free diet.

Celiac disease is an autoimmune disorder triggered by gluten (found in wheat, rye, and barley). Lifelong adherence to a gluten-free diet allows intestinal healing, prevents malabsorption, and reduces risks of complications like osteoporosis and malignancies. Other conditions (CF, PKU, galactosemia) require different dietary modifications.

Iron deficiency impairs neurotransmitter function and myelination, leading to reduced cognitive performance, learning difficulties, and lower IQ. It is one of the most common nutrient deficiencies affecting school performance worldwide. Vitamin C, D, and calcium deficiencies have other health effects but do not directly impair cognition to the same extent.

Enteral nutrition is preferred whenever the gastrointestinal tract is functional because it maintains gut mucosal integrity, prevents villous atrophy, and reduces bacterial translocation. This lowers the risk of infections compared to parenteral nutrition. While parenteral feeding bypasses the gut and delivers nutrients directly, it carries risks such as sepsis and liver dysfunction. Enteral feeding also allows more physiologic nutrient absorption and hormonal regulation.