Your Gut Is Running Your Immune System?

Here’s What That Means for Winter

Why the most important immune organ in your body is not where you think it is.

When patients come to me with recurrent illness, slow recovery, or that general feeling of being run down through winter, one of the first things I look at is their gut.

This often surprises people. They expect me to talk about zinc and Vitamin C. And yes, those matter. But underneath the nutrient conversation, there is a more foundational question: is the gut environment healthy enough to support a robust immune response in the first place?

The answer, in many cases, is no and once we address that, everything else starts to work better.