Beyond Restrictive Diets: Real-World Nutrition Tips for EDS, POTS, and MCAS

When you're living with complex chronic conditions like Ehlers-Danlos Syndrome (EDS), POTS, or Mast Cell Activation Syndrome (MCAS), the nutrition advice you find online can feel overwhelming—and contradictory. Should you eliminate histamine forever? Are leftovers really that dangerous? And why does everyone keep telling you to wear compression socks that are impossible to put on?

I recently had the pleasure of speaking with Louisa O'Grady, a registered dietitian who specializes in these exact conditions, and her approach completely challenges some of the rigid thinking I've seen in our community. What I loved most about our conversation was how practical and individualized her recommendations were.

The Low-Histamine Diet Myth

Let's start with the big one: the low histamine diet. If you've been diagnosed with MCAS, you've probably been told to follow this elimination diet. But here's what Louisa wants you to know—it's meant to be temporary. I love when multiple experts are saying the same thing, just like when Samina Qureshi and Annika Angelo told us to eat food without fear in their interviews as well.

"These elimination diets like a low-histamine diet are really intended to be two to four weeks," Louisa explained. The goal isn't to restrict forever; it's to reset your system and then slowly reintroduce foods while tracking your symptoms.

But here's the kicker: food might not even be your main trigger. Louisa listed off other common MCAS triggers that we often overlook:

  • Barometric pressure changes

  • Environmental odors

  • Light sensitivity

  • Poor sleep quality

  • Stress (one of the biggest triggers)

  • Mold exposure

This is why she recommends keeping a detailed food and symptom journal that includes these environmental factors. You might discover that your reaction to tomatoes last Tuesday had nothing to do with the tomatoes and everything to do with the argument you had with your spouse that evening.

And I want to give a caveat here - the food journal is better at helping you realize there is no pattern, utlimately reducing your anxiety about what you can and cannot control.

The Belly Band Game-Changer

One tip that reall surprised me was Louisa's recommendation for abdominal compression during meals. If you have POTS, you know that eating can sometimes trigger symptoms because blood gets diverted to your digestive system. (Again, it would be easy to attribute this to a specific food even when it’s simply about anything you’re digesting.)

Instead of those impossible-to-put-on compression stockings (seriously, who designed those things?), try a simple belly band or even high-waisted Spanx-like product. You might consider wearing it before eating and for an hour or two afterward.

"The belly ones are actually a lot more valuable to many people than the socks," Louisa shared. It's such a simple, inexpensive thing to try, and if it doesn't work for you, you're only out twenty bucks.

Small Frequent Meals That Actually Work

For both EDS and POTS, Louisa recommends the classic "small frequent meals" approach, but with a twist. Instead of creating more work for yourself, she suggests making your regular portions and then splitting them throughout the day.

Each meal or snack should include:

  • A source of protein (chicken, fish, nuts, beans, dairy)

  • Complex carbohydrates aka: fiber (sweet potato, fruit vs. juice or desserts)

  • Healthy fats when possible (avocado, olive oil, nuts)

The protein and fat help stabilize your blood sugar, preventing those energy crashes that can worsen brain fog and dizziness.

Fiber Without the Fear

For those dealing with the gut issues that often come with EDS (and let's be real, most of us have gut issues), increasing fiber can help, but it needs to be done strategically.

Louisa suggests starting with soluble fiber if you're prone to bloating. Think oatmeal and apples, but here's the key: how you prepare them matters. Instead of chomping on a raw apple with the skin, try cooking it and removing the peel initially. Add some cinnamon and gradually work your way up to tolerating more fiber.

And please, for the love of all things holy, increase your water intake when you add fiber. I learned this the hard way, and I don't want you to make the same mistake.

Why I Love This Approach

What struck me most about Louisa's philosophy is that she focuses on addition rather than restriction. "I love anything where we don't have to restrict," she told me. "I want to do things that are adding and benefiting people's lives rather than taking things away."

This is so important when you're already dealing with the restrictions that chronic illness places on your life. The last thing you need is a diet that makes you feel even more limited.

The Nervous System 

We can't talk about managing these conditions without addressing nervous system regulation. Louisa often starts simple with her clients who are skeptical about holistic approaches:

"If you took three deep breaths beforehand with a longer exhale each time, that will put your body into this parasympathetic or rest and digest state and your body will be prepared and ready to accept that food."

Sometimes the most powerful interventions are the simplest ones.

Finding Your Own Path

Throughout our conversation, Louisa emphasized that there's no one-size-fits-all approach to managing these conditions. What works for one person might not work for another, and that's completely normal.

Her approach starts with what you're already doing and what feels comfortable for you, then makes small, sustainable changes from there. No dramatic overhauls, no impossible-to-follow meal plans—just practical modifications that fit into your real life.

The Bottom Line

If you're living with EDS, POTS, or MCAS, you don't have to choose between managing your symptoms and enjoying food. Yes, these conditions require some nutritional considerations, but they don't have to completely dictate your relationship with eating.

Work with a qualified professional who understands these conditions, focus on what you can add rather than what you need to eliminate, and remember that small, consistent changes often have more impact than dramatic restrictions.

And seriously, try the belly band thing. Twenty dollars and you might just find your new favorite management tool.

Louisa O'Grady is a Registered Dietitian – nutritionist, certified diabetes educator and certified integrative and functional nutrition practitioner. She's deeply committed to empowering individuals navigating chronic conditions, including Dysautonomia, POTS (a form of dysautonomia), Ehlers-Danlos Syndrome, Mast Cell Activation Disorders, chronic pain, and their associated challenges.

You can connect with Louisa O'Grady at louisaogrady.com or follow her on Instagram @louisaogrady.rd for more practical nutrition tips for complex chronic conditions.

This blog post is based on an interview with Louisa O'Grady, registered dietitian, on The Chronic Illness Therapist Podcast. For more resources on navigating healthcare challenges, subscribe to our newsletter and follow us on social media.

Disclaimer: Everything we discuss here is just meant to be general education and information. It's not intended as personal mental health or medical advice. If you have any questions related to your unique circumstances, please contact a licensed therapist or medical professional in your state of residence.

Listen to Louisa’s interview with me, Destiny Davis, on Ep 97: Beyond Restrictive Diets: Real-World Nutrition Tips for EDS, POTS, and MCAS

Listen on Apple

Listen on Spotify

 
Podcast cover art for "The Chronic Illness Therapist Podcast" with Destiny Davis, LPC CRC

Listen to Louisa’s interview with me, Destiny Davis, on Ep 97: Beyond Restrictive Diets: Real-World Nutrition Tips for EDS, POTS, and MCAS

Listen on Apple

Listen on Spotify


Louisa O'Grady, registered dietitian – nutritionist, certified diabetes educator and certified integrative and functional nutrition practitioner, smiling wearing a burgundy blouse and a beaded necklace

Louisa O'Grady, MS RDN CDCES IFNCP, is a registered dietitian – nutritionist, certified diabetes educator and certified integrative and functional nutrition practitioner. She's deeply committed to empowering individuals navigating chronic conditions, including Dysautonomia, POTS (a form of dysautonomia), Ehlers-Danlos Syndrome, Mast Cell Activation Disorders, chronic pain, and their associated challenges.


Destiny Davis, LPC CRC, smiling in a pink sweater standing outdoors with crossed arms

Meet Destiny - The host of The Chronic Illness Therapist Podcast and a licensed mental health therapist in the states of Georgia and Florida. Destiny offers traditional 50-minute therapy sessions as well as therapy intensives and monthly online workshops for the chronic illness community.

Previous
Previous

You Don't Have to Choose Between Conventional Medicine & Holistic Health (And Why That Choice is Hurting You)

Next
Next

Therapists, We're Missing Something in the Eating Disorder / Gastrointestinal Disease Intersection