Galactosemia “A Rare but Serious Disorder”


Galactosemia is an inherited disorder, and it is actually quite rare, with an occurrence of 1 out of every 60,000 births among Caucasians (it does occur in other groups, though this was the only reported number we found).  Nonetheless, it is prevalent enough to make note of, particularly considering the severity of the disorder.

During digestion, lactose (a complex milk sugar) is broken down into two simple sugars, glucose and galactose. The galactose and glucose then enter the bloodstream where the galactose is converted in more glucose.  Glucose is used as a primary source of energy for the body.

Not to be confused with lactose intolerance, Galactosemia is a much more dangerous disorder that involves the inability to break down galactose.  While someone with Galactosemia may have no problem in digesting lactose, their body lacks the ability to metabolize galactose.  As a result, galactose accumulates in the body, where it may damage the liver, central nervous system, eyes, kidneys, and other body systems.

Individuals with galactosemia cannot tolerate any form of milk, including human breast milk.  After drinking milk for a few days, a newborn with galactosemia will refuse to eat.  Symptoms that may occur include jaundice, vomittting, poor weight gain, lethargy, irritability, and convulsions.  Continued feeding of milk to infants with galactosemia will result in cirrhosis of the liver, cataract formation in the eye, and mental retardation.

Treatment for galactosemia involves a strict lifelong milk-free diet, abstaining from all milk and products containing milk, essentially a dairy-free diet.

For more information on this condition, visit:

Parents of Galactosemic Children –
Medline: Galactosemia –

Thank you to Jennifer for bringing this disorder to our attention. 

About Author

Alisa is the founder of, Food Editor for Allergic Living magazine, and author of the best-selling dairy-free book, Go Dairy Free: The Guide and Cookbook for Milk Allergies, Lactose Intolerance, and Casein-Free Living, and the new cookbook, Eat Dairy Free: Your Essential Cookbook for Everyday Meals, Snacks, and Sweets. Alisa is also a professional recipe creator and product ambassador for the natural food industry.

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