MS, RDN · Functional Nutrition Practitioner

I'm Jacquelyn Hackett — Registered Dietitian, Functional Nutrition Practitioner, and Someone Who Has Lived What You're Going Through.

Gut-centered root cause nutrition for women navigating hormonal dysfunction, metabolic imbalance, disordered eating, nervous system blocks, and the chronic symptoms that restriction and generic protocols have never been able to fix.

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🎓MS, Nutritional Science

✅Registered Dietitian Nutritionist (RDN)

💪Certified Personal Trainer (CPT)

🌱Certified Intuitive Eating Counselor

📋9+ Years Clinical Experience

🌎Virtual Practice — All States

Her Story

I Didn't Build This Practice From a Textbook. I Built It From Experience — Mine and My Clients'.

Before I was a practitioner, I was a patient navigating my own GI issues, disordered eating, body image struggles, and sports injuries. I know what it feels like to be in a body that isn't cooperating — and to be handed advice that is technically correct but completely misses the point of what you're actually going through.

Those experiences didn't just make me more empathetic. They fundamentally changed how I practice.

I studied Psychology and Sociology as a double Bachelor's before completing my Master's in Nutritional Science — because I have always believed that the mind and the body are not separate conversations. You cannot address someone's relationship with food without understanding the psychological and emotional layers underneath it. And you cannot address someone's physical symptoms without understanding the nervous system that is running in the background of all of it.

I went on to become a Registered Dietitian, Certified Personal Trainer, and Certified Intuitive Eating Counselor. Over 9 years of clinical work later, I founded Hackett Health around a single conviction: real, lasting health does not come from restriction or rigid protocols. It comes from understanding what your body actually needs — and building from there.

My approach is not about eating less or following a plan designed for someone else. It is about investigating what is driving your symptoms, addressing the root cause, and rebuilding a relationship with food and your body that is sustainable for the rest of your life.

Jackie Hackett — functional nutrition practitioner

The Foundation

Two Systems That Drive Almost Everything — That Almost Nobody Is Addressing Together

Your gut influences your hormones, your immune system, your mood, your skin, your metabolism, and your brain. When it is dysregulated — overgrown, inflamed, or unable to absorb nutrients properly — those effects ripple outward into every system in your body. Most of my clients have never had a single comprehensive gut test run despite years of symptoms that trace directly back to it.

But the gut does not work in isolation. The nervous system is the operating system running underneath all of it.

When your nervous system is chronically dysregulated — stuck in a stress response your body cannot exit — it impairs digestion, disrupts hormone production, drives blood sugar instability, and creates an internal environment where healing is physiologically difficult regardless of what you eat or how many supplements you take. This is the piece that most nutrition practices skip entirely. It is also the piece that explains why so many women do everything right on paper and still cannot move the needle.

Jacquelyn addresses gut health and nervous system regulation as the foundation of every client's work — because without that foundation, nothing else holds the way it should.

Nourishing dessert — food freedom and functional nutrition

Specializations

These Are Signals. Not Sentences.

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Gut & Digestive

IBS, SIBO, GERD, leaky gut, bloating, food sensitivities, chronic digestive dysfunction

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Hormonal

PCOS, endometriosis, irregular cycles, PMS, perimenopause, fertility challenges, postpartum hormonal shifts

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Thyroid

Hypothyroidism, Hashimoto's thyroiditis, weight resistance, fatigue, hair loss, "my labs are normal but I feel anything but"

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Metabolic & Blood Sugar

Insulin resistance, Type 2 diabetes, blood sugar dysregulation, cravings, post-meal crashes, stubborn weight gain

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Disordered Eating & Body Image

Binge eating, restriction cycles, chronic dieting, emotional eating, rebuilding a relationship with food that isn't rooted in fear

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Nervous System & Stress

Burnout, anxiety, wired-but-tired, chronic stress response, nervous system dysregulation showing up as physical symptoms

If your diagnosis isn't listed — bring it. The investigation is the same.

Functional Testing

Testing That Looks at What Has Actually Been Driving Your Symptoms

Standard nutrition advice rarely includes functional testing. Jacquelyn built her practice around it — because without knowing what is actually happening inside your body, every recommendation is a guess.

Every test is chosen based on your specific symptoms, history, and clinical picture.

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BiomeFX

A DNA-level look at your gut ecosystem — bacterial balance, pathogens, inflammation markers, digestive function, and immune activity. This is where we find the gut dysfunction that has been quietly driving symptoms for years.

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DUTCH Test

A full picture of how your body produces, uses, and clears hormones across an entire day — cortisol rhythm, estrogen metabolism, progesterone, androgens. The real story behind your cycles, mood, energy, and sleep.

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HTMA

Cellular mineral status, heavy metal burden, and metabolic patterns that standard blood work cannot detect. Often the missing piece behind fatigue, thyroid dysfunction, nervous system dysregulation, and mood instability.

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OAT

Mitochondrial function, neurotransmitter production, gut microbial activity, detox capacity, and cellular nutrient deficiencies. The test that explains the brain fog, the exhaustion, and the plateau nothing has been able to break.

Additional Testing

Complete thyroid panels, advanced metabolic and insulin markers, comprehensive nutrient panels, inflammatory markers — all read at functional optimal ranges, not just disease thresholds.

Take the 2-Minute Quiz — See Which Labs Make the Most Sense for You

Free Quiz

Not Sure Where to Start?

Take this 2-minute quiz to find out what functional nutrition can uncover for your specific symptoms — and which labs are most likely to give you the answers you've been missing.

Take the Free Quiz

You've Spent Long Enough Adapting to Symptoms That Should Have Been Investigated.

Jacquelyn built this practice for the woman who has tried everything, been told she's fine, and knows that something is still wrong. If that's you — let's talk.

Book a Free Strategy Call

Limited availability — Jacquelyn works with a small number of clients at a time.

The Team

Built by Practitioners Who've Been There

Every member of the Hackett Health team is a credentialed practitioner who shares Jackie's conviction: root-cause investigation, not symptom management.