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Category Archives: Monday Musings

Can L-Glutamine Cause Brain Fog? {Monday Musings}

Welcome to Monday Musings! I don’t expect this to be a weekly thing, but I wanted a nifty little label to slap on posts where I’m basically just thinking out loud. Wouldn’t want to delude anyone into thinking I have all the answers, now would I?
Thanks for being here!

L-glutamine, once a lowly amino acid vying for attention among 19 siblings, has become a darling of functional medicine for its role in gut health and intestinal permeability. L-glutamine is an important fuel source for enterocytes, which are the cells lining the intestines, and there’s pretty solid evidence that L-glutamine can help strengthen the intestinal barrier.

That all sounds fantastic, right? I sure thought so, and I supplemented accordingly, on and off, for several years. But recently, some self-experimentation has led me to suspect L-glutamine of being a contributor to some pretty intense brain fog and other mental symptoms I’ve been experiencing. L-glutamine was low on my list of suspects, because I had such positive expectations of it, so it took me a while to notice an association. But the timing was there, so I decided to investigate. Read more →