Diagnostics
Emerging EvidenceOrganic acids, methylation panels, oxidative stress markers, and specialty diagnostics.
A 2026 systematic review of 41 trials identified which interventions genuinely lower next-generation epigenetic clocks — and which popular longevity staples have no detectable effect.
A physician's clinical comparison of DMSA and DMPS — mechanism, target metals, dosing, mineral depletion, and how to choose between the two oral chelators.
TMG donates methyl groups to lower homocysteine, support liver function, and enhance athletic performance. Clinical dosing, evidence, and who benefits most.
Head-to-head comparison of the top commercial biological age tests — TruAge, GlycanAge, and OMICmAge — to help you choose the right panel for your longevity goals.
A physician's guide to chelation therapy safety — covering EDTA, DMPS, and DMSA risks, contraindications, mineral depletion, and clinical monitoring protocols.
Fat-soluble thiamine that crosses cell membranes conventional B1 cannot. How benfotiamine repairs peripheral nerves, reduces oxidative stress, and supports recovery in Lyme, diabetes, and post-COVID neuropathy.
Discover how functional medicine addresses Hashimoto's thyroiditis beyond TSH levels—root causes, advanced testing, and evidence-based protocols to reduce antibodies and symptoms.
High homocysteine quietly damages blood vessels and the brain. A physician explains optimal ranges, root causes like MTHFR, and evidence-based ways to lower it.
Dr. Douwes breaks down every B12 form — methylcobalamin, adenosylcobalamin, hydroxocobalamin — covering dosing, testing, and who truly benefits from active B12.
Glycine at 3 g before bed improves sleep quality in RCTs. As a longevity molecule it drives collagen synthesis, glutathione via GlyNAC, and mTOR modulation.
POTS and dysautonomia affect millions after infection or long COVID. This functional medicine protocol addresses root causes beyond symptom management.
Dr. Douwes explains MTHFR gene variants, how they disrupt methylation and detox, which labs to run, and the evidence-based supplement protocol he uses clinically.
A physician's evidence-based guide to zinc supplementation — covering dosing, forms, immune support, testosterone, wound healing, and who actually needs it.
Clinical guide to diagnosing and treating SIBO with functional medicine — breath testing, rifaximin vs herbal antimicrobials, diet, and relapse prevention.
A physician's guide to Rhodiola rosea — how it modulates the HPA axis, reduces stress-related fatigue, and improves cognitive performance in clinical practice.
Dr. med. univ. Julian Douwes explains heavy metal chelation therapy — which agents to use, when to use them, how to prepare, and how to monitor safely in clinical practice.
What happens during your first consultation at St. George Hospital. The labs we order, the intake process, how we build your treatment plan, and realistic timelines.
Essential functional medicine labs most doctors skip. hs-CRP, fasting insulin, homocysteine, full thyroid, ApoB, and more — what to request and why it matters.
Complete guide to the Organic Acids Test. What the 70+ markers mean, what OAT reveals about mitochondrial function, neurotransmitters, and gut health, and when to order it.
Why functional medicine blood test ranges differ from conventional lab ranges. TSH, vitamin D, ferritin, fasting glucose — what 'normal' really means and why it matters.
Why standard lab reference ranges miss early disease. Optimal ranges for TSH, ferritin, vitamin D, B12, fasting insulin, hsCRP, and why functional medicine testing matters.
A clinical guide to organic acids testing, DUTCH hormone testing, and GI-MAP stool analysis -- what they measure and when to use them.
