Galactose is a simple ‘monosaccharide’ sugar naturally occurring in milk. Joined with glucose, it forms lactose, the principal sugar in milk and dairy foods. It is particularly important in early human development.(1)

Compared with glucose and fructose, galactose is not found in high quantities in any food.

Foods high in galactose include milk-based puddings, sweetened yogurt, cherries, honey, celery, kiwifruit, hamburgers (with condiments), plums, low-fat mozzarella, and avocados. (2)