The rate of flow of galactose to the liver when one eats yogurt is not as high.

Besides, with lactose hydrolyzed milk, you are ingesting the two sugars: glucose and galactose at the same time.

With yogurt, you are ingesting lactic acid and galactose which makes a difference in the way liver cells handle the galactose.

note: Lactaid Milk is Lactose Hydrolized Milk