Functional Medicine MD: What 5,000+ Patients Taught Him About Root Cause Medicine

In this episode of Return on Health, we speak with Dr. Peter Martin, physician, former CNS pharmacology researcher, and founder of FunMed, one of Europe’s leading functional medicine clinics.

Peter spent around 15 years in pharmacology research before his own burnout pushed him to look beyond the conventional model of symptom control. What started as a personal search for recovery became a data-driven clinical model built around root cause medicine, extensive biomarker testing, gut health, metabolism, and chronic disease prevention.

We talk about what functional medicine actually means, why chronic disease often needs a different care model, and what Peter has learned from treating more than 5,000 patients. He explains why fasting insulin may be one of the most overlooked markers in modern healthcare, how low-grade inflammation is often connected to gut health, and why normal lab results do not always mean someone is truly healthy.

We also get into the controversial parts: large biomarker panels, false positives, red meat, vegan diets, anti-nutrients, carnivore diets, and the weakness of much nutrition research. Peter also shares why he believes functional medicine could become part of the European healthcare system, especially if reimbursement shifts from visits and procedures toward actual health outcomes.

This episode covers:

• What 5,000+ patients taught him

• Why fasting insulin is often missed

• How root cause medicine could change care

Topics discussed:

00:00 Introduction
01:00 What FunMed does differently
02:00 Real-world data from 5,000+ patients
03:30 From CNS pharmacology to functional medicine
07:00 Root cause medicine vs symptom control
10:30 Precision health in Sweden and Germany
15:30 Why FunMed tests around 200 biomarkers
21:00 False positives and the problem with large panels
28:00 Fasting insulin and insulin resistance
31:00 Low-grade inflammation and gut health
35:30 Low-carb and ancestral nutrition
41:00 Vegan diets, nutrient deficiencies, and bio-individuality
49:30 Red meat, nutrition research, and epidemiology
56:00 Functional medicine and insurance coverage
59:00 Rapid fire: biomarkers, magnesium, carnivore diet, healthcare reform

Guest

Dr. Peter Martin

Physician, former CNS pharmacology researcher, founder of FunMed, and one of the leading voices trying to bring functional medicine and precision health into European healthcare.

Guest links

LinkedIn: https://www.linkedin.com/in/peter-martin-31b23342/
FunMed: https://www.funmed.se/?srsltid=AfmBOorlgUNnEK1ba7p_zIxug35sx3YMSq6PmYiufq6xJH1VAQ-EiQc0

Return on Health is available wherever you get your podcasts.

If you enjoyed this episode, leaving a 5-star rating on Spotify helps us bring more honest conversations about health, longevity, and medicine to more people.

Harvard MD: The Peptide Boom Is Here.. But Is Medicine Ready?

In this episode of Return on Health, Niko and Miguel speak with Dr. Anand Vinjamoori, Harvard Medical School and Harvard Business School trained physician, former founding Chief Medical Officer at Modern Age, advisor to Superpower, and founder of Next Generation Medicine.

Together, they discuss why longevity medicine is booming while many companies still struggle to build sustainable businesses, why peptides may become one of the next major waves in health optimization, and why the future of biomarkers will likely require a much more individualized and data-driven approach.

This episode covers:

The peptide boom and why it matters
Why longevity businesses often fail
What biomarkers can and cannot tell us

Dr. Anand explains why the current medical evidence system may be too slow for the next generation of therapies, how real-world data and patient registries could help close the evidence gap, and why biomarkers should be used with nuance rather than treated as absolute truth. He also shares his view on overhyped interventions, the role of exercise, and the cultural differences between American optimization culture and European lifestyle rhythms.

Key topics

Longevity medicine and market timing
The business challenges behind longevity clinics
Customer acquisition and why messaging matters
The rise of peptides in health optimization
Evidence gaps, real-world data, and patient registries
Personalized medicine and individual risk assessment
Biomarkers, multi-omics, and biological individuality
Why HBA1c can be overinterpreted
Exercise as one of the strongest health interventions
Cold plunges and the problem of overapplied hormesis
European lifestyle culture vs. American optimization culture

Chapters

00:00 The Longevity Paradox
01:03 Building Modern Age and the Early Longevity Market
05:04 Personal Motivations Behind Longevity Medicine
07:57 What Patients Actually Want From Longevity Care
11:39 Why Many Longevity Businesses Struggle
15:12 How Customer Preferences Have Changed
18:21 Peptides as the Next Big Wave
19:07 Peptides, Regulation, and Medical Experimentation
24:24 The Evidence Gap in Peptide Use
30:58 Why Medicine Needs Better Risk Assessment
36:59 Biomarkers and Biological Ground Truth
44:20 Multi-Omics and the Future of Measurement
48:35 Which Biomarkers Are Useful — And Which Are Noise?
52:42 Culture, Lifestyle, and Health Optimization
55:45 Lightning Round: Metrics, Interventions, and Healthcare Reform

Guest

Dr. Anand VinjamooriHarvard Medical School and Harvard Business School trained physician, former founding Chief Medical Officer at Modern Age, advisor to Superpower, and founder of Next Generation Medicine.

Guest links

LinkedIn: https://www.linkedin.com/in/vinjamoori/
Next Generation Medicine: https://www.nextgenerationmedicine.co/
Superpower: https://www.linkedin.com/company/superpower/posts/?feedView=all

Listen now

Return on Health is available wherever you get your podcasts.

If you enjoyed this episode, leaving a 5-star rating on Spotify helps us bring more honest conversations about health, longevity, and medicine to more people.

Most people think aging is something that happens later.

In reality, the processes that determine how you age — and whether you stay functional — start decades earlier.

In this episode of Return on Health, we sit down with Roberta Vella Azzopardi, a geriatrician and geroscientist with a PhD in cognitive frailty, to break down what aging actually looks like in clinical practice.

Instead of focusing on single diseases, this conversation zooms out: Why do people lose independence? What really drives decline? And where are the biggest missed opportunities in prevention?

What this episode covers

• Why modern medicine often intervenes too late
• What frailty really means — and why it matters more than age
• How loss of muscle drives metabolic and cognitive decline
• The concept of peak span and why function beats lifespan
• Why hearing loss is one of the biggest overlooked dementia risk factors
• The massive gap in menopause and women’s health care
• What actually works vs. what’s just hype in longevity

Key takeaways

Frailty is best understood as loss of physiological reserves.
When those reserves drop below a certain threshold, even small stressors can lead to long-term decline.

This is why two people at the same age can look completely different clinically — one independent, one dependent.

A major driver of this process is muscle loss.
Muscle is not just about movement. It directly affects metabolic health, insulin sensitivity, and even brain function. The good news: even later in life, resistance training and sufficient protein intake can still improve outcomes.

One of the most underestimated risk factors discussed in this episode is hearing loss.
It contributes to cognitive decline through increased cognitive load, social isolation, and shared vascular mechanisms — yet remains widely underdiagnosed and undertreated.

Another critical blind spot is women’s health, especially around menopause.
Many symptoms are treated in isolation instead of addressing underlying hormonal changes, leading to years of missed intervention opportunities.

Timestamps

(00:00) Introduction & Roberta’s background
(04:30) Frailty explained: vulnerability vs. age
(11:00) Why prevention starts decades earlier
(16:50) Reversing decline: muscle, protein, training
(21:00) Peak span vs. lifespan
(28:30) Menopause and missed diagnoses
(36:30) Dementia prevention & modifiable risks
(37:00) Hearing loss and cognitive decline
(50:00) Busting common aging myths
(55:00) Lightning round insights

Takeaways

• Start investing in your health early — not when problems appear
• Maintain muscle mass through resistance training and protein intake
• Don’t ignore hearing health — it directly impacts brain health
• Look at root causes, not isolated symptoms
• Prevention is not one intervention — it’s a system

Roberta:
https://www.linkedin.com/in/roberta-vella-azzopardi-md-phd-8235878a/

Return on Health:
https://returnonhealth.de/

Niko:
https://www.linkedin.com/in/niko-hems/
https://www.instagram.com/niko_hems
https://nikohems.de/

Miguel:
https://www.linkedin.com/in/miguel-medina-stanivukovic-857b9720b/
https://www.instagram.com/miguelmedinastanivukovic/?hl=en