Vitamin D helped by helping gut - German interview, English voiceover

What vitamin D & your gut reveal about your health

[https://www.vitamindservice.de/VitaminDBox-Video}YouTube German]

Dr. Raimund von Helden is probably the doctor who is most enthusiastically advancing the topic of vitamin D in Germany (0:05). Raimund, we've had the pleasure of interviewing you twice already. The first interview we conducted has now received almost 200,000 views. We'll link it at the end (0:10). Today, however, we're talking about something new that you and your team have developed. It's about vitamin D deficiency symptoms – and much more (0:16). Would you like to introduce us to what great things you've come up with? (0:21)

Yes, everything I produce and publish stems from my practical experience since 2006 – almost two decades in which I've been issuing vitamin D prescriptions every day without ever encountering any problems (0:36). In fact, I was the first to discover that vitamin D deficiency also causes acute symptoms – acute vitamin D deficiency syndrome. I wrote a book about it – the first of its kind – and now there are over 300 books on Amazon that deal with therapeutic approaches to vitamin D. This is basically my "child" (1:02).

I not only described this success, but also scientifically systematized it. I developed the entire mathematics of vitamin D: that is, I calculated exactly how much you need to get from an initial value to a target value – without any trial and error or constant remeasurement (1:23). Unlike medications for high blood pressure or diabetes, where you titrate up slowly, with vitamin D you can immediately tell: This amount is necessary (1:35). From this, I developed and continuously perfected the world's first vitamin D calculator – probably the only one that calculates truly well. All other calculators are often just poor copies (1:59).

Then came the idea of modeling vitamin D levels over the course of a year. Vitamin D is unique in medicine: We can simulate levels over the course of a year – something that is otherwise almost impossible with medications (2:18). Medications are prescribed in large quantities, but the effective levels are often unknown. With vitamin D, however, we can model them – using a specially developed simulator (2:33).

Many patients come to me with a variety of symptoms. After thousands of encounters annually – probably over 20,000 in my practice alone – I have learned to recognize patterns (3:23). At the end of a conversation, many say: "Now I'm confused, so many symptoms, so many possible causes." Out of this uncertainty, I developed a tool that provides orientation – a kind of puzzle that can be put together at the push of a button (3:49).

Because it was originally created in a tin box with magnets, I created the domain "vitamindbox.de." It's publicly accessible – no registration required (4:08). Anyone who visits the site can recognize typical symptoms in everyday language: nighttime leg pain, exhaustion, poor sleep, pain when walking, susceptibility to infection, osteoporosis, constipation, food intolerances such as those to salami or fish – you can check all of these (4:48). By clicking on "Sort now," the entries are sorted into an overall picture (5:13).

My approach differs greatly from university medicine, which often deals with very specific diseases. I take a bird's eye view of the big picture – I call it satellite science (5:33). This allows me to paint a comprehensive picture (5:59). For example, we see a yellow column – that's the vitamin D deficiency syndrome, to which my book also owes its success (6:05). Often, 80% of symptoms can be attributed to these factors. Using the small black info buttons, you can find out more about each topic (6:20).

For example, with the term "adynamia" – lack of motivation – you can click through the website, read testimonials, or explore connections with vitamin D (6:59).

In addition to vitamin D syndrome, there is another important field: zonulin syndrome (7:40). Many people know this as "leaky gut syndrome." Zonulin is a laboratory value that indicates the permeability of the intestinal barrier – a hard scientific value that, like vitamin D, is measurable and interpretable (7:59). It was discovered in 2000 by Harvard professor Alessio Fasano. The zonulin measurement costs around 30 euros and can also be performed in German laboratories (8:25).

Many symptoms are listed at the top of the page. Not all of them can be attributed to a vitamin D deficiency – some belong to zonulin syndrome. This separation – this sorting – is a task for experts (8:47).

And so I've created three main categories in the vitamin D box:

  1. the yellow zone (vitamin D deficiency),

  2. the green zone (zonulin syndrome), and the

  3. red zone, which lies in between – the classic diseases of civilization (10:11).

These red areas lie at the intersection of both causal fields. Here we find diseases such as cancer, osteoporosis, autoimmune diseases, and many others (10:18). And again, there are information options for each entry (10:31).

Patients who have visited many specialized clinics and specialists are often perplexed: "What did I do wrong? Why did I get sick?" And I then say: The causes lie in a chronic vitamin D deficiency (which is often ignored) and a disturbed intestine – zonulin syndrome (11:01).

Vitamin D is the connection to the outside world – to the sun. Many people avoid sunlight, sit in basements, or suffer from sun allergies (11:22). The intestine, on the other hand, is our microcosm – billions of bacteria work there for us. But when the intestine is damaged by poor diet, stress, medication, or infections, permeability develops, which promotes inflammation, allergies, and autoimmune diseases (11:40).

I have developed a product for zonulin syndrome: the yellow powder Nana 10. It is based on natural substances and has been proven to lower zonulin levels (12:40). So we have a measurable problem, a therapeutic agent, and visible successes – for example, in conditions like lipedema (13:05).

There is also a fourth column – the black field. This is where food intolerances are listed – such as those to fish, alcohol, blue cheese, or tomatoes. These are also indications of a zonulin problem (15:07).

Nana 10 is an open-source product. I've made it available to the public – without patents, without exclusive rights. Any manufacturer can replicate it (16:02). This promotes competition, lowers prices, and enables broad availability (16:22).

Just as I began raising public awareness of vitamin D levels 20 years ago, I now want to establish zonulin as an important blood or stool test (17:03). Then, as now, I conducted research from a practical perspective – not in an ivory tower, but with people's real problems (17:21).

With vitamin D, I've seen that a level of 60–100 ng/ml is optimal.

Even with levels up to 250, there were no problems that weren't reversible (21:22).

With zonulin, we're now seeing a similar trend: levels above 100 should be treated, levels below 50 are considered normal (23:15).

Those who regularly take Nana 10 can slowly decrease their blood sugar levels from high values like 400 to healthy levels below 50 month after month (23:02). I also take it myself as a precaution – because of its ingredients like magnesium citrate, vitamin C, inulin, and silicon – all in sensible doses of 1 g per substance (23:52).

Unlike overpriced supplements with tiny amounts and cryptic recipes, I deliberately designed Nana 10 so that anyone can replicate it themselves – with ten known substances, each containing 1 g (24:12).

Anyone who wants to know if they are affected can have their stool zonulin measured – because that's exactly where zonulin activity takes place. The zonulin key is like the front door key you throw to your son from the window: It opens the door. But if hundreds of these keys are constantly lying around, the door is too wide open (29:03). Then unwanted substances come into the house – into our bodies – and cause harm (30:21).

So instead of spending thousands of euros analyzing the gut microbiome in detail, a simple zonulin value is often sufficient – as a causal and therapeutic key (31:15).

I want to move away from expensive, patent-focused medicine and toward genuine preventative healthcare. Many chronic diseases such as allergies, autoimmune diseases, or cancer are linked to vitamin D and zonulin. It's time we recognize these connections and act – not with band-aids, but with cause and effect (32:53).


Key Points in 5–10 Bullet Points from Chat-GPT

  1. Acute Vitamin D Deficiency Identified as a Syndrome (00:50–01:24)
    • Dr. von Helden was one of the first to recognize that acute Vitamin D deficiency can cause immediately noticeable symptoms. He developed a Vitamin D calculator to precisely determine dosages and avoid trial-and-error.
  2. Development of the Vitamin D Simulator and the "Vitamin D Box" (02:11–05:28)
    • He created a tool called the Vitamin D Box , an online interface where users can select their symptoms. The tool sorts these symptoms and shows whether they're likely related to Vitamin D deficiency or something else like Zonulin Syndrome .
  3. Holistic Approach vs. Over-Specialized Medicine (05:53–06:21)
    • Instead of focusing on rare diseases requiring expensive drugs, von Helden takes a bird’s-eye (satellite) view to identify broad root causes of common illnesses.
  4. Zonulin Syndrome: Gut Dysfunction as the Second Main Cause of Disease (07:32–10:18)
    • In addition to Vitamin D deficiency, Zonulin Syndrome (aka “leaky gut”) is identified as another major contributor to chronic illness. Zonulin is a measurable marker that indicates gut permeability.
  5. Chronic Diseases Lie at the Intersection of These Two Deficiencies (10:18–11:25)
    • Diseases like autoimmune conditions, cancer, osteoporosis , and others often result from the combination of low Vitamin D and compromised gut barrier .
  6. Treatment: Optimize Vitamin D & Lower Zonulin (12:27–14:35)

    • Target lab values:

      • Vitamin D: 60–100 ng/mL

      • Zonulin: under 50 ng/mL

        • He recommends his natural, open-source powder formula “ Nana10 ” to reduce Zonulin levels effectively.
  7. Vitamin D Is Safe Even at Higher Levels (21:11–23:07)
    • Dr. von Helden reports that even levels of 150–250 ng/mL in his patients caused no harm , countering common toxicity fears. Side effects, if any, were reversible.
  8. Zonulin Can Be Measured Easily and Cheaply (16:17–18:00)
    • Zonulin testing costs about €30 in Germany and can be ordered from a lab. Von Helden sees this as being where Vitamin D awareness was 20 years ago .
  9. Open-Source Approach, Not Profit-Driven (15:50–16:58)
    • The Vitamin D Box and the Zonulin-lowering supplement are open-source , non-patented tools. He has no ties to pharmaceutical companies , encouraging independent reproduction and public benefit.
  10. Root Cause Medicine, Not Just Symptom Control (26:50–30:01)
    • By measuring and correcting Vitamin D and Zonulin levels , many symptoms can be resolved without pharmaceuticals. His recommendation:
  • Use the free Vitamin D Box tool

  • Measure your Vitamin D and Zonulin

  • Bring levels into the healthy range

  • Track improvements over time


Symptom-to-Cause Mapping Table (Chat-GPT)
Symptom Likely Cause Notes
Muscle pain / leg aches at night Vitamin D Def. Classic symptom of low Vitamin D
Persistent fatigue / lack of energy Both Can stem from D deficiency or gut inflammation
Poor sleep quality Vitamin D Def. Often reported to improve with optimal Vitamin D levels
Pain when walking long distances Vitamin D Def. Linked to musculoskeletal weakness
Frequent infections Vitamin D Def. Vitamin D modulates immune function
Osteoporosis / brittle bones Vitamin D Def. Directly impacts calcium absorption and bone remodeling
Constipation / slow digestion Zonulin Synd. Related to gut dysbiosis and inflammation
Food intolerances (e.g., salami, fish) Zonulin Synd. Suggests increased gut permeability (Leaky Gut)
Chronic stomach issues Zonulin Synd. Zonulin affects gut lining; inflammation can trigger GI symptoms
Autoimmune diseases (e.g., Hashimoto's, IBD) Zonulin Synd. Leaky gut linked to immune dysregulation and autoimmunity
Allergies / histamine sensitivity Zonulin Synd. Gut permeability allows allergens into bloodstream
Mood swings / brain fog Both Brain-inflammation and neurochemical effects possible
Skin issues (eczema, rashes) Both Linked to immune and gut-skin axis or nutrient deficiency
Chronic migraines Both Dr. von Helden reports success treating with Vitamin D + gut repair
Feeling "drained" after eating certain foods Zonulin Synd. Post-meal fatigue indicates food sensitivity or inflammation

Color Key for Causes:

  • 🟡 Vitamin D Deficiency – Often linked to low sunlight exposure, poor absorption

  • 🟩 Zonulin Syndrome (Leaky Gut) – Indicates increased gut permeability, systemic inflammation

  • 🟧 Both – Synergistic overlap; requires attention to both systems


Vitamin D Life: There are many ways to improve Vitamin D and gut if have poor gut