Available Australia-Wide

Samantha Purvis

Accredited Practising Dietitian
Samantha Purvis is an Accredited Practising Dietitian focused on the intersection of gut health, hormones, and autonomic regulation. Her practice recognises that digestive dysfunction rarely exists in isolation—addressing SIBO, IBS, and dysmotility as foundational to treating hormone challenges, inflammation, and systemic symptoms others dismiss as unrelated.
Samantha Purvis

Samantha provides evidence-based nutrition therapy for patients whose digestive symptoms have been minimized as "just IBS" while fatigue, brain fog, hormone disruption, and autonomic symptoms continue worsening. Her assessments investigate root causes—bacterial overgrowth, motility disorders, inflammatory patterns—that explain why symptoms resist and persist.

The Gut & Invisible Illness

Samantha's practice understands that gut dysfunction can affect nearly every element of health. When SIBO disrupts nutrient absorption, thyroid function suffers. When intestinal permeability increases, histamine intolerance develops. When bacterial overgrowth triggers systemic inflammation, hormones, autonomic function, and mental health are affected.

She treats digestive dysfunction as a primary driver of multi-system illness. Her SIBO protocols address bacterial overgrowth while supporting the motility disorders that allowed it to develop. Her IBS approach investigates whether symptoms stem from carbohydrate malabsorption, bile acid dysfunction, or post-infectious changes—each requiring different approaches.

Understanding that 70% of IBS patients have undiagnosed SIBO, Samantha connects digestive symptoms to seemingly unrelated presentations. The iron-deficient patient with restless legs may have duodenal SIBO. The woman with treatment-resistant hypothyroidism may have impaired conversion from intestinal inflammation. The POTS patient with worsening orthostatic intolerance may have developed histamine intolerance from gut dysbiosis.

Hormones, Pelvic & Reproductive Health

Within Biio's Hormone pathway, Samantha addresses women's health through a nutrition-first lens. Her PCOS protocols treat both insulin resistance and the SIBO that affects 50% of PCOS patients. Her endometriosis nutrition reduces inflammatory drivers while supporting microbiome diversity that influences estrogen metabolism and pain signaling.

She recognises that hormonal symptoms throughout the lifespan often trace to digestive dysfunction. Painful periods correlate with gut inflammation affecting prostaglandin production. PMDD severity worsens with dysbiosis that impairs serotonin synthesis. Perimenopausal symptoms amplify when gut health declines alongside shifting hormone levels.

For fertility concerns, she optimises nutrient absorption and reduces gut inflammation that disrupts hormone signaling. During pregnancy, her gestational diabetes protocols balance blood sugar management with adequate nutrition, accounting for pregnancy-altered gastric emptying. Her pelvic health work addresses how gut symptoms intersect with pelvic floor dysfunction, constipation affecting prolapse risk, and bowel-bladder coordination.

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Samantha Purvis

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