By Dr. Nicole Kearney, ND — Naturopathic Doctor specializing in hormonal health, fertility, and gut health Understanding the Connection between Histamine Intolerance and Hormone Imbalance If you’ve ever noticed that your headaches, bloating, anxiety, depression, insomnia or skin flare-ups seem to worsen at certain times of your cycle, you’re not imagining it. Histamine — a chemical messenger involved in immune response, digestion, and the nervous system — fluctuates in step with your...

Introduction  When we think of hormones and fertility, we often focus on things like ovulation, thyroid function, insulin resistance or progesterone/estrogen balance. What’s less commonly discussed is the role of histamine and the phenomenon of histamine intolerance (HIT) in disrupting hormonal health. Histamine is a key mediator in our immune system, gut health, vascular function and neurotransmitter balance. When histamine accumulates due to impaired breakdown or excessive release, the...

Many people know the gut is central to digestion, but what’s less understood is how deeply it impacts hormones. Research and clinical...