What is the Impact of Lactose in Adults?

I've been thinking about lactose intolerance and galactosemia.  Perhaps, adults shouldn't be drinking milk? or dairy products?  Although most people have developed a tolerance to lactose, I'm wondering what are the other possible deleterious effects of lactose.

Lactose is broken down into glucose and galactose.  Those with galactosemia cannot break down galactose which leads to serious health problems.  The only treatment is eliminating lactose and galactose in the diet.

It should be noted that The Okinawa diet consists of almost no dairy products.   Unlike, the Blue Zones diet which encourages the consumption of goat's milk (contains lactose).

Also, cheese lactose content is much lower than milk or yogurt (See Stonyfield's lactose chart)

This needs further investigation.

by Christie Ewen