Why is soy or hypoallergenic formula recommended in galactosemia versus lactose-free cow's milk?

• A. Higher protein content
• B. The galactose content of lactose-free cow's milk is high (~20 mg/L) compared to soy/hypoallergenic formulas
• C. It is cheaper
• D. It reduces symptoms

Answer: (B)

Galactosemia means the body cannot process galactose, so any product containing galactose must be avoided. Lactose-free cow’s milk is treated to split lactose into glucose and galactose, so it still contains free galactose—often at measurable levels—despite the absence of lactose. Soy or hypoallergenic formulas, on the other hand, do not provide galactose, so they prevent exposure to the problematic sugar. That’s why they are recommended for galactosemia. The other points (protein content, cost, or general symptom relief) aren’t the primary reason; the key is eliminating galactose exposure.