Yes I understand lactose-intolerance is quite a natural state of beings on any mammal really - as an infant the baby's intestines have this bacterial flora that can chop down the lactose into nutrition particles, BUT once the mother quits feeding the milk, the flora simply starves to death in a matter of weeks or so, and after that there is no way to revive it and the baby becomes lactose-intolerant.

Many people give milk to cats and hedgehogs etc. but don't realize every wild animal is lactose-intolerant and likely gets stomach aches from it.

I believe my intolerance came about mostly because while I was in the U.S. I drank basically no milk at all, or very little at any rate, and what I did, probably was superpasteurized and whatnot, not really regular milk...and because of that the flora died.

It took me months afterwards to realize what's wrong, I did drink milk for months again when I came back, but I kept getting these weird symptops and gas and whatnot, and then I took this test where they took my blood and checked the sugar in it, then I had to drink a quart of pure lactose, and they tested again in 20 minutes, and the blood sugar level had not changed, indicating I could no longer use lactose for nutrition.

I quit drinking milk and milk products for years after that, until in around the year 2000 or so the markets suddenly flooded with non-lactose milk and products, including milk that tastes just like normal milk (i.e. not sweet like some lactose-free milks) and I started drinking milk again.

BTW even though completely feeling-based, when I had quit drinking milk and milk products, my hair thinned severely in a matter of 3 or so years, and for the first time in my life I had two cavities in my teeth...since I started drinking milk again, I haven't had a cavity since and those two are the only reasons I have ever gotten dental treatment (save some wisdom teeth removed), and my hair feels, if not much thicker, at least hasn't thinned any worse no more, so I do believe milk & milk products are very good for me.