Evidence-Based Protocols: A Physician’s Approach

By Dr. Julian Douwes, M.D. — Chief Medical Officer, Klinik St. Georg

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Protocols are a framework, not a prescription. I want to be clear about this distinction before presenting any protocol on this site.

A protocol is a structured approach to a health goal — supporting immune function, optimizing sleep, preparing for treatment, recovering from illness. It combines lifestyle modifications, dietary adjustments, and targeted supplementation into a coherent sequence. When designed well, a protocol reflects the best available evidence, acknowledges uncertainty, and provides a practical starting point that individuals can adapt to their circumstances.

A prescription is a specific medical intervention tailored to a specific patient by a physician who has examined them, reviewed their history, and considered their individual risk factors. Protocols cannot replace prescriptions. They can inform the conversations you have with your physician about what might be useful in your case.

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How I Design Protocols

Evidence Stratification

Every supplement recommendation in my protocols includes an evidence level. This is non-negotiable. Patients deserve to know whether a recommendation is based on multiple randomized controlled trials or on my clinical observation. Both have value, but they carry different weight.

I use the following framework:

Level	Description	Example
Strong	Multiple RCTs, meta-analyses, or systematic reviews	Vitamin D for immune function, omega-3 for inflammation
Moderate	Controlled human studies, smaller RCTs, consistent observational data	Curcumin for NF-kB inhibition, berberine for metabolic health
Emerging	Preliminary human data, strong mechanistic rationale, early clinical trials	Certain peptides, specific probiotic strains for novel indications
Traditional	Long historical use, mechanistic plausibility, limited modern clinical data	Adaptogenic herbs, some traditional botanical preparations
Preclinical	Animal studies only, laboratory data; human translation uncertain	Many novel compounds discussed in biohacking communities

When I include a supplement with emerging or traditional evidence, I say so explicitly. When I include something with strong evidence, I cite the specific studies or categories of evidence supporting it. The difference matters.

The Hierarchy of Intervention

In every protocol, lifestyle and dietary interventions come first. Supplements come second. Advanced interventions come third.

This order reflects both the evidence base and clinical reality:

1. Lifestyle foundations — sleep, exercise, stress management, dietary pattern — have the strongest evidence for health outcomes and cost nothing. They are also the hardest to implement consistently, which is why they often need the most attention.

2. Targeted supplementation — fills specific gaps, addresses specific mechanisms, supports the body during periods of increased demand. Supplements work best when the foundations are in place. A sleep supplement is a poor substitute for fixing the light environment and stress levels that are actually causing the insomnia.

3. Advanced interventions — IV therapies, peptides, prescription medications, clinical treatments. These require physician supervision, are more expensive, and carry more risk. They should be reserved for situations where foundations and supplementation are insufficient.

I see too many protocols that skip straight to exotic supplements while ignoring the fact that the patient sleeps five hours, eats processed food, and is chronically stressed. The supplements will not work optimally in that context.

Individualization

Every protocol on this site is a general framework. Individual variation plays a significant role in how any person responds to any intervention. Factors that influence response include:

• Genetics — methylation status (MTHFR variants), detoxification capacity (CYP enzyme polymorphisms), nutrient metabolism
• Current health status — existing conditions, medications, nutrient levels
• Gut health — absorption capacity, microbiome composition, intestinal permeability
• Age and sex — hormonal status, metabolic rate, body composition
• Stress load — HPA axis function, cortisol levels, autonomic balance

This is why I recommend testing before supplementing when possible. A protocol designed around your specific lab results will produce better outcomes than a generic protocol applied without context.

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What These Protocols Are Not

They are not prescriptions. I am sharing frameworks based on evidence and clinical experience. They are not a substitute for working with a physician who knows your case.

They are not medical advice for specific conditions. If you have a diagnosed medical condition, your treatment should be managed by a physician. These protocols may complement that treatment, but they should not replace it.

They are not sales pitches. I do not sell supplements. The brands I mention (when I mention specific brands) are based on quality and evidence, not financial relationships.

They are not guaranteed to work. Individual variation means that what works for 80% of patients may not work for you. If a protocol does not produce improvement within the expected timeframe, that is valuable information — it means the protocol needs adjustment or the underlying issue is different from what was assumed.

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The Available Protocols

Daily and Lifestyle

• Morning Protocol — cold exposure, light, and foundational supplements
• Sleep Optimization — environment, timing, and targeted support
• Brain Performance — cognitive optimization through lifestyle and supplementation

Gut and Metabolic

• 30-Day Gut Reset — a phased approach to gut restoration
• Gentle Detoxification — liver, lymph, and binder support

Immune and Inflammatory

• Immune Support — seasonal, pre-travel, and illness prevention
• Anti-Inflammation — diet, supplement, and lifestyle framework
• Lyme Support — between-treatment support for Lyme patients
• Post-COVID Recovery — addressing inflammation, clotting, and energy

Travel and Preparation

• Travel Health — immune support, jet lag management, gut protection
• Pre-Treatment Preparation — how to prepare before coming to St. George

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A Final Note

The best protocol is the one you actually follow. I have seen elaborate supplement regimens abandoned after two weeks because they were impractical. I have also seen simple protocols — good sleep, consistent exercise, three well-chosen supplements — produce remarkable results because the patient maintained them for months.

Start with what is sustainable. Build from there. Measure your progress. Adjust based on results, not assumptions.

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Disclaimer: These protocols are provided for educational purposes and reflect one physician’s clinical approach. They are not a substitute for individualized medical care. Consult a qualified physician before beginning any new supplement protocol, particularly if you have existing medical conditions or are taking medications.