Functional Medicine Practitioner | Gut Health & Hormone Balance

Rebuild Your Health Naturally

▶︎Gut issues

▶︎Hormone shifts

▶︎Energy & weight

Guiding women and men worldwide with lab testing, personalized protocols & holistic coaching – online and in-person.

What We Help With

Gut Health

IBS, bloating, reflux, microbiome imbalance

Hormone Balance

perimenopause, menopause, PMS, thyroid concerns

Energy & Fatigue

brain fog, poor sleep, low vitality

Weight & Inflammation

stubborn weight, chronic inflammation, metabolism issues

Functional Testing

Find the Root Cause of Your Gut & Health Issues
Stop guessing what’s wrong. With advanced functional testing – including GI-MAP (gut microbiome), Candida, parasite, and food sensitivity tests – we uncover the hidden reasons behind symptoms like bloating, fatigue, skin problems, and stubborn weight.

Your symptoms have a story – and the test reveals it.

▶ Explore Functional Testing →

Live Blood Test

See What Your Blood Reveals – In Real Time
Dark Field Microscopy provides a live picture of your blood’s vitality, immune balance, and overall health terrain. It’s a powerful tool to detect hidden imbalances, inflammation, and deficiencies – guiding us towards natural healing strategies that work.

Gain instant insight into your inner health.

▶ Explore Live Blood Analysis →

How Our Functional Medicine Approach Works

1) Lab Testing

GI-MAP (microbiome), DUTCH (hormones), Organic Acids and targeted blood work to identify root causes behind IBS/bloating, fatigue, thyroid/hormone shifts and inflammation.

2) Personalized Plan

Nutrition calibrated to your biology, targeted supplements, herbs/essential oils when relevant, and daily lifestyle strategies (sleep, stress, movement, circadian habits).

3) Ongoing Support

Regular consultations, protocol adjustments based on progress and labs, clear milestones and accountability until your goals are met.

Evidence-informed, root-cause care that blends advanced lab testing with personalized protocols and holistic coaching.

Functional Medicine Programs – Choose Your Healing Path

Personalized, evidence-informed care that finds root causes and guides you step by step.

Note: Functional lab tests (GI-MAP, food sensitivity, hormones) are billed separately.

Preventive Screening (Standalone)
€100
  • Live blood test included (at physical appointment)
  • 20-minute session with basic feedback
  • Overview of blood vitality and immune function
Buy Screening
Essential Consultation
€250
  • Includes 1 consultation (in-person or online)
  • Live blood test included (at physical appointment)
  • In-depth review of symptoms & history
  • Full analysis of blood findings + personalized diet, lifestyle & supplement plan
Buy Consultation
Comprehensive Program
€600
  • Includes 3 consultations with support & adjustments
  • Live blood test included (at physical appointment)
  • Functional test analysis (GI-MAP, hormones, food sensitivity) included in your plan*
  • Personalized protocol based on findings
Buy Program

About lab tests

For in-person consultations, the Live blood test is included in the visit price.

In the Consultation and Comprehensive Package, the analysis of lab test is included.

Lab test kits are not included in package prices and are billed separately https://sifffrost.com/products-list

(If you’re unsure which package fits, book a free 15-minute call.)

A Holistic Path to Health & Vitality

We rebuild health from the inside out with functional medicine and holistic coaching — rooted in science, nature and daily habits.

  • Functional lab testing: GI-MAP, DUTCH, Organic Acids and targeted blood work — no guessing.
  • Personalized protocols: Nutrition, lifestyle and evidence-based supplements tailored to your biology.
  • Natural remedies (when relevant): Herbs & essential oils chosen for your case and quality-checked.
  • Real-life strategies: Sleep, stress, circadian rhythm and movement you can sustain.

No one-size-fits-all. Just a clear plan and support until you reach results.

Learn more about our approach →

Book a free call
Functional medicine and holistic lab approach

What Our Customers Are Saying

“I was struggling with gut issues and fatigue for years. I had tried everything, but nothing seemed to work. Then I started working with Holistic healing.”

Janice

“I was diagnosed with high blood pressure and diabetes some years ago. I was worried about taking medication for the rest of my life, so I decided to try.”

Flint

“I started a weight-loss program with Siff, and with her listening, empathetic, and practical approach she helped me believe in myself.”

Conni
Join Rebuild your health

FAQS

What is holistic nutrition?

Holistic nutrition looks at the whole person—not just food. We connect diet, sleep, stress, movement and your environment with symptoms and lab data to create a plan that supports body, mind and hormones.

What is the difference between a holistic nutritionist and a registered dietitian?

Dietitians focus on medical nutrition therapy inside conventional systems. I work functionally and holistically: we use advanced labs, root-cause analysis and lifestyle strategies to individualize your plan. I don’t diagnose or prescribe.

How can gut healing help me?

Balancing the microbiome can reduce bloating/IBS, improve nutrient absorption, calm inflammation, steady energy and mood, and support hormones, skin and weight regulation.

Are lab tests included in the price?

Live blood test is included at in-person visits. Comprehensive Program includes analysis of lab test. Test kits (e.g., GI-MAP, DUTCH, Organic Acids) are billed separately.

Which tests do you use?

GI-MAP (microbiome), DUTCH (hormones), Organic Acids, and targeted blood work (iron, thyroid, inflammation, glucose/insulin, lipids) — selected to your case. We don’t guess; we test when it will change the plan.

Can you review labs from my doctor?

Yes. Upload recent results (PDF/photos) before your session or bring printed copies. I translate numbers into a clear, prioritized action plan.

Do you work online or in person?

Both. I see clients worldwide via secure video. In-person sessions are available in the Málaga area, Spain, and during selected periods in Denmark.

How soon will I notice a difference?

Many feel changes within 2–4 weeks as sleep, digestion and blood sugar stabilize. Complex cases can take longer depending on findings and adherence.