Because of spam, I personally moderate all comments left on my blog. That means you will not see your comment when you post it. It will instead show up within 48 hours, along with my response if one is appropriate.

All comments are welcome and will be posted, even if they are negative. You just can't promote other sites or products in them.

If you have a personal question about LI or any related topic you can send me an email at

Otherwise, this blog and my Lactose Intolerance Clearinghouse are now legacy sites, meaning that I am not updating them any longer. The basic information about LI is still sound. However, product information and weblinks may be out of date.

My old website can be found at

For quick offline reference, you can purchase Planet Lactose: The Best of the Blog as an ebook on or or or a whole lot of other places that Smashwords is suppose to distribute the book to. Almost 100,000 words on LI, allergies, milk products, milk-free products, and the genetics of intolerance, along with large helpings of the weirdness that is the Net.

Monday, December 21, 2009

Lactose Intolerance and Diarrhea Revisited

I received an email with a straightforward question that I may never have answered as compactly.

Steve, I am wondering if a person who gets diarrhea from being lactose intolerant would get diarrhea from other foods more readily than if you weren't LI?

So here's the short answer.
No, there is no connection between LI and other diarrhea-causing problems.

However, some diseases, like irritable bowel syndrome, may be triggered by milk and also by other foods. That's a different mechanism than LI, however.

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