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SGA infants have low glycogen stores and are prone to hypoglycemia. Early and frequent breastfeeding helps stabilize glucose levels. Delaying feeds or restricting frequency increases risk, while water provides no nutrients or glucose.

Rickets, caused by vitamin D deficiency (or sometimes calcium deficiency), presents with bowed legs, delayed closure of fontanelles, rachitic rosary (beading of the rib cage), and bone deformities. Bleeding gums are signs of scurvy (vitamin C deficiency), dermatitis and diarrhea are associated with pellagra (niacin deficiency), and night blindness is linked to vitamin A deficiency. Early vitamin D supplementation and sunlight exposure prevent rickets.

Preterm infants are at risk of hypoglycemia because they miss the third-trimester nutrient accretion period and are born with low glycogen and fat reserves. Their immature livers also have limited ability to mobilize glucose. Excess insulin production is rare (more typical of infants of diabetic mothers). Thus, monitoring and early feeding are critical.

Folate deficiency in pregnancy increases the risk of neural tube defects such as spina bifida. Adequate folate intake is critical before conception and in early pregnancy. Vitamin D prevents rickets, vitamin C prevents scurvy, and vitamin K prevents bleeding disorders but do not affect neural tube development.

The goal of nutrition therapy in Type 1 diabetes is to support normal growth and development while maintaining optimal glycemic control. Carbohydrate counting, meal planning, and balancing insulin with food intake help achieve stable blood glucose levels. Restricting all carbohydrates or limiting activity is harmful, while promoting weight loss is not the priority unless the child is overweight.