It seems that way doesn't it...but actually quite a high percentage of the worlds population is lactose intolerant (to some degree, as there are varying degrees of severity)...cats are all naturally lactose intolerant, I believe dogs are too, they don't carry the enzyme to break lactose down in their system.
I was lactose intolerant as a child, apparently "grew" out of it then about 7 yrs ago became severely lactose intolerant but it was masked by my crohn's so m GI tested me for it and sure enough, severe lactose intolerance...since using probiotics (either primadophilus reuteri or ProBio TX-11, 2 that I now of for sure) they aid with lactose intolerance issues and I no longer have it...I do take my probitotics daily and plan to indefinitely.
Here's a pretty good link about cause of lactose intolerance....copy and paste if it doesn't work when you click it.
bee propolis caps 500mg one cap twice/day
omegas 369 caps one cap twice/day
probiotics 10 billion cfu once/day
vitamins C-calcium ascorbate (easy on the gut) and vitamin A each once/day
Prodiem fibre supplement one cap before bed
I've also altered my diet (no junky stuff at all, processed, fast-foods, refined sugars, ect) and exercise regularly.
I went from 30+ bloody BM's/day with lots of lower back pain to an average of 5/day no bleeding no back pain and completely formed stools, still have severe urgency issues.
~~~~~~~~My bum is broken....there's a big crack down the middle of it! LOL :)~~~~~~~~