Bel Air, California
Bel Air Dietitian
IBS, SIBO & Weight Management
Bel Air clients don't settle for generalist answers in any other part of their lives, and their health shouldn't be the exception.
I'm Sarah Mirkin, RDN, CPT, LD — a Registered Dietitian Nutritionist with over 25 years of clinical experience and a national reputation in IBS, SIBO, and sustainable weight management. I work with Bel Air clients virtually, with the kind of specialized, one-to-one care a busy life actually needs.
I Was Here Before This Was a Field
Here's what sets my practice apart, and it isn't marketing. Back when I was a dietitian at Cedars-Sinai Medical Group, Dr. Mark Pimentel — the researcher who defined SIBO — was a colleague of mine. I could reach him on his cell and text him my questions, and I was one of the first people to take the SIBO breath test — back when it measured hydrogen only, before Xifaxan existed, and before the low-FODMAP diet had been developed. I've been close to this field since it began, not since it became popular.
When Generic Advice Stops Being Acceptable
Most people come to me after the same cycle: doctors who offer limited answers for chronic digestive issues, weight programs that deliver temporary results, and nutrition advice that treats everyone the same. That's not what I do. Every client gets a program built entirely around their physiology, history, food preferences, and schedule — a strategy that works in your real life, not just on paper.
IBS and SIBO, Done Right
IBS and SIBO are among the most mismanaged conditions in medicine. A large share of people diagnosed with IBS actually have underlying SIBO — a condition that's testable, treatable, and responds well to the right dietary approach. As a Monash University certified low-FODMAP dietitian, I guide you through all three phases — elimination, reintroduction, and personalization — so you end up with more foods and more freedom, not a permanent list of restrictions.
The VIP Option
For clients who want the highest level of access, my VIP program includes:
- Unlimited direct text access
- Daily check-ins
- Fully customized meal planning
- Bi-weekly grocery lists
- Coordination with your personal chef locally or internationally
- Restaurant guidance built around how you actually dine
- Full access to my secure client platform
I work with a limited number of clients so every relationship gets real attention. I'm the author of The Beginner's Guide to Low FODMAP and Fill Your Plate, Lose the Weight, and my work has been featured in Forbes, Martha Stewart Living, Prevention, and more. If you're ready for nutrition care at this level, I invite you to apply.