Maryann Walsh smiling in a bright kitchen, holding a bowl of pasta

Registered dietitian · Jupiter, Florida

Nutrition, translated.

Maryann Walsh turns nutrition science into words brands can print, talks audiences act on, and plans people can actually live with.

The scienceMast cells release histamine in response to dietary triggers.

In plain EnglishWhy dinner can feel like an allergy.

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Find your way in Let’s talk

15+ years in nutrition
2× TEDx speaker
RD Licensed FL and RI
PhD candidate, psychology
CDCES diabetes care
CMNCS mental health nutrition

Brands she has worked with

What brings you here?

One expert. Your way in.

Brands, event planners, producers, patients, mothers and readers all come to Maryann for something different. Start with the door that fits, and every page after it speaks to you.

For brands and organizations

Make nutrition clear, credible and consumer-friendly

Claims, consumer education, spokesperson work and product development for food and nutrition brands.

Brand consulting

For event planners

Keynotes on nutrition, mental health and micro-habits

Two-time TEDx speaker. Conference keynotes, corporate sessions and panels.

Speaking

For producers and editors

A dietitian who is ready for air

TV segments, interviews and expert commentary.

Press kit

For patients

Care for complex bodies and busy minds

MCAS, POTS, EDS, histamine intolerance and mental health nutrition.

Nutrition counseling

For mothers and clinicians

The ISLA Protocol™

A free tool connecting nutrient labs to maternal mood, before and after birth.

Explore ISLA

Here to read? Browse the journal or meet the book.

The thread through everything

Good science, lost in translation. She finds it.

For brands, the claim

Clinically supports gastrointestinal transit and digestive regularity

Helps keep you regular.

For audiences, the habit

Implementation intentions reduce the intention-behavior gap

Make the habit too small to skip.

For patients, the plan

Mast cell mediator release triggered by dietary biogenic amines

Why dinner can feel like an allergy.

For mothers, the question

Suboptimal ferritin and omega-3 status in the perinatal period

Labs worth asking your doctor about.

Brand consulting Speaking

What organizers and editors say

Maryann’s sense of humor and personality combined with her expertise in behavior change pulls you in and makes you want to take action.

Heather MonahanBest-selling author and keynote speaker

Maryann has so much personality and she draws her audience in with her ability to connect. We all left excited and ready to create some new micro-habits!

Corina ClarkPresident, California Association of Healthcare Leaders

Speaking as a seasoned magazine editor who worked with marquee-name experts, I can say without hesitation that, as an R.D. and nutritionist, Maryann Walsh is that rarest of beings: the real deal who thoroughly knows her field and is great with men and women!

Fran CarpentierMedia strategist

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Maryann at the podium on a conference stage

ISLA Protocol™

One in five mothers. Twelve markers worth checking.

Maryann built the ISLA Protocol after her own postpartum recovery and named it for her daughter. It pairs a short symptom screen with nutrient lab values and returns a plain-English report to bring to a provider. Free, no account, and designed to sit alongside therapy and medication, never instead of them.

12biomarkers

2tracks, prenatal and postpartum

$0to use the tool

How ISLA works

MoodRoot™ report · examplePostpartum track

Copper : Zinc ratioFlagged

Omega-3 indexFlagged

FerritinSuboptimal

HomocysteineSuboptimal

25-OH Vitamin DOptimal

Example reportDiscuss with your provider

The book

Change too small to fail.

The Micro-Habits Matrix™ is the framework behind Maryann’s keynotes, now in paperback and Kindle. It is the same idea that runs through her client work: make the next step so small it becomes automatic.

About the book Bring the talk to your event

From the journal

Clear answers to noisy questions.

All 113 articles, sorted by topic →

Histamine and MCAS

MCAS vs. Histamine Intolerance: What Is Actually Going On In Your Body (And Why the Difference Matters for What You Eat)

Understand MCAS and histamine intolerance: explore symptoms and find clarity on what foods to avoid for better health.

Apr 27, 202616 min read

Weight and metabolism

Do You Need a Continuous Glucose Monitor (CGM)? A Dietitian’s Honest Take

Explore the benefits of a Continuous Glucose Monitor (CGM) for tracking your metabolic health and enhancing well-being.

Feb 19, 20265 min read

Weight and metabolism

The GLP-1 Nutrition Protocol: What to Eat When You’re Not Hungry

Unlock the secrets to healthy eating on Ozempic. Prioritize protein to prevent muscle loss while promoting effective weight loss.

Feb 3, 20264 min read

Start a conversation

Let’s make it make sense.

Partner on a brandClaims, content, spokesperson Book a keynoteConferences, corporate, panels Become a patientSecure booking portal