Malibu, California
Malibu Dietitian
IBS, SIBO & Weight Management
In Malibu, life runs on your own terms — and your health care should too.
I'm Sarah Mirkin, RDN, CPT, LD, a Registered Dietitian Nutritionist with over 25 years of clinical experience specializing in IBS, SIBO, and sustainable weight management. I see Malibu clients virtually, so world-class, personalized gut and weight care fits around your schedule instead of interrupting it.
A Depth of Experience You Can't Fake
My expertise didn't come from a weekend certification. When I was a dietitian at Cedars-Sinai Medical Group, Dr. Mark Pimentel — the researcher whose work defined modern SIBO care — was a colleague of mine, back when almost no one knew the term. I could call and text him directly, and I was among the first to ever take the SIBO breath test, in the early days when it only measured hydrogen, before Xifaxan and before the low-FODMAP diet existed. I've been close to this work since it started, and that history shapes how I treat every client today.
Personalized, Never Templated
Even in Malibu, most people have run the same frustrating loop: excellent doctors with limited answers, weight-loss programs that don't last, and advice that ignores their individual physiology. My approach is the opposite. No template, no one-size protocol — a genuinely personalized strategy built from a deep understanding of your metabolism, your history, and your life.
Getting IBS and SIBO Right
Chronic bloating, digestive pain, and unpredictable symptoms are too often dismissed or half-treated. Many people living with these have never been properly tested for SIBO in the first place. As a Monash University certified low-FODMAP dietitian, I work alongside your physician to identify what's really going on and guide you through the full three-phase low-FODMAP process — so symptoms become predictable and your diet gets wider, not narrower.
The VIP Option
For those who want the highest level of access and personalization, my VIP program offers:
- Unlimited direct text access
- Daily check-ins and feedback
- Fully customized meal planning
- Bi-weekly grocery lists
- Coordination with your personal chef locally or internationally
- Tailored restaurant guidance
- Full access to my secure client platform
I keep my client roster small on purpose, so each person gets the attention this work requires. I'm the author of two books — The Beginner's Guide to Low FODMAP and Fill Your Plate, Lose the Weight — and my expertise has been featured in Forbes, Martha Stewart Living, Prevention, and more. If you're ready, I invite you to apply.