GUT HEALTH · IBS · LOW FODMAP
IBS & Low FODMAP Dietitian
Ariel Rasabi Cohn, MS, RD, LDN is a Licensed and Registered Dietitian Nutritionist specialized in gastrointestinal disorders and low FODMAP certified. She helps people with IBS and other digestive conditions calm their symptoms and eat with confidence again, in virtual sessions from home.

Who Ariel helps
- Irritable bowel syndrome (IBS-C, IBS-D and mixed)
- Bloating, gas, abdominal pain, constipation or diarrhea
- Celiac disease and gluten-free eating
- Crohn’s disease and Colitis (IBD)
- Food allergies and food sensitivities
- Anyone told to “try low FODMAP” who doesn’t know where to start
How the low FODMAP diet works
- Elimination. A short phase, usually 2 to 6 weeks, swapping high FODMAP foods for low FODMAP ones, with meal ideas that still feel like real food.
- Reintroduction. FODMAP groups (like lactose, fructose, fructans and polyols) are tested one at a time to find your personal triggers and your amounts.
- Personalization. Everything you tolerate comes back. You leave with the most varied diet possible and a plan for flare-ups.
What working together looks like
Your first virtual session covers your symptoms, health history, current eating pattern, lifestyle and goals. From there Ariel builds a plan for you: what to eat, practical swaps for the foods you love, grocery and restaurant tips, and a reintroduction schedule. Follow-ups, weekly or bi-weekly, keep you supported and on track. Her approach is health-based, not weight-based, and she will never ask you to give up more than you need to.
Sessions are virtual, and Whole Health Nutrition is in-network with most major insurance companies.
Questions about IBS and low FODMAP
What is a low FODMAP diet?
FODMAPs are short-chain carbohydrates (Fermentable Oligosaccharides, Disaccharides, Monosaccharides And Polyols) that some people absorb poorly. In the gut they draw in water and are fermented by bacteria, which can cause bloating, gas, pain, constipation or diarrhea in people with IBS. The low FODMAP diet, developed by researchers at Monash University, is a short-term elimination diet followed by a structured reintroduction to find your personal triggers.
Is the low FODMAP diet forever?
No. It is a learning diet with three phases: a short elimination phase (usually 2 to 6 weeks), a reintroduction phase where FODMAP groups are tested one at a time, and a personalization phase where you bring back everything you tolerate. The goal is the most varied diet possible with the fewest symptoms.
Why work with a dietitian for low FODMAP?
Many high FODMAP foods are also some of the most nutritious, fiber-rich foods. Without guidance it is easy to cut too much for too long, skip the reintroduction, or miss nutrients. Ariel is low FODMAP certified and guides you through each phase with meal ideas, swaps and a reintroduction schedule built around your life.
Do I need an IBS diagnosis first?
We recommend seeing your physician or gastroenterologist to rule out other conditions before starting. Ariel also works with clients who have Celiac disease, Crohn’s disease, Colitis and food allergies or sensitivities.
Are sessions virtual, and does insurance cover them?
Yes, sessions are virtual, so you can meet from home, work or anywhere. Whole Health Nutrition is in-network with most major insurance companies; ask your plan about nutrition counseling benefits (codes 97802 for the initial visit and 97803 for follow-ups).
Start feeling better
Tell Ariel a little about what’s going on. She’ll get back to you within 24 hours.
