The Dr. Hyman Show · 2026-09-14 · 21 min · 4,099 words

5 Foods That Are Making Your Brain Fog Worse

Listen to the original audio · Transcribed with NVIDIA Parakeet · Timestamps stay in sync with the live audio

Why do some foods leave you mentally exhausted? And what can you do about it? Well, if your brain feels like it's running in slow motion, you can't focus, you lose your train of thought, you walk in a room and forget why you're there, maybe you struggle to find the right words, you you might be thinking you're just getting older. Well, you're probably not. Well, you are getting older, and that's probably not the reason.

One of the biggest myths about brain fog is that it's a normal part of aging. It is not. In functional medicine, we don't think of brain fog as a diagnosis. We think of it as a symptom, a warning line on your body's dashboard, telling you something deeper needs attention. And one of the biggest drivers may surprise you, it isn't your brain, it's your gut.

I know how frightening brain fog can be because I've experienced it myself. After suffering mercury poisoning, I developed severe brain fog. I felt like I was trying to think through wet cement. My memory wasn't sharp, I couldn't concentrate. I mean even simple tasks suddenly really felt difficult.

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