Allergy, Intolerance, or MCAS? Three Reasons Food Can Make You Feel Awful
IgE allergy, food intolerance, and MCAS feel similar but run on different biology. Nurse Jen explains how to tell them apart — even when tests are normal.
Written by Dr. Kara Wada

IgE allergy, food intolerance, and MCAS feel similar but run on different biology. Nurse Jen explains how to tell them apart — even when tests are normal.

Pet allergies don't have to mean rehoming your companion. Nurse Jen's room-by-room plan to lower dander and calm an overreacting immune system.

Ragweed, mold, and dust add inflammation to an already-reactive immune system. Nurse Jen's plan to get ahead of fall allergies before they start.

A 2025 review of 12,000 studies identified 15 common herbs that stimulate immune activity. Here is what that means if your immune system is already dysregulated.


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