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WELCOME TO THE BLOG

Education and insights on hormone health, cycle regulation, fertility, and supporting your body through every season of life.

This is where I share what I'm learning, what I'm seeing in my practice, and the questions that come up most often from women navigating their hormone health. You'll find practical information on cycle awareness, fertility support, postpartum recovery, and how to actually understand what your body is telling you. Whether you're here to learn more about a specific symptom, explore root causes, or simply understand your body better, this is your space to dig deeper.

Hey, I’m Kathy!

I'm a virtual Registered Dietitian based out of Florida. I specialize in functional nutrition for women navigating hormone health, fertility challenges, and motherhood.

I went back to school to become a dietitian because I saw the importance of utilizing food as medicine. I wanted to help people change their lives through food and lifestyle. While in school, I found myself questioning what I was learning and soon realized the goal was symptom management NOT healing. For me, symptom management wasn’t enough so I pursued functional training after graduation.


I’ve struggled with disordered eating, hormone imbalance, and infertility. My health challenges paired with my clinical training shape how I show up for every client.

Ready to Understand What's Happening?

Whether you're looking for comprehensive functional lab testing or ongoing support to address the root cause of your symptoms, there's a place to start.

Nourish with Kathy is a virtual functional nutrition practice founded by Katherine Diaz, a Registered Dietitian specializing in women's hormone health, cycle regulation, fertility & pediatric functional medicine support. Kathy helps women and moms get real answers through functional lab testing, personalized nutrition, and root-cause care.

Based in Miami, Florida. Serving clients virtually nationwide.

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