Understanding Blood Test Results: Why Connections Matter

A single blood marker is like a single word pulled out of a sentence: it hints at something, but its meaning only becomes clear in context. Whether your cholesterol, your ferritin or your blood sugar deserves attention depends on what your other results show and how they change over time. That's why at speak23 we don't treat health as a list of numbers, but as a system of 12 interconnected mechanisms.

Why this is more than a nice idea becomes clear when you look at the bigger picture: worldwide, people spend almost ten years of their lives, on average, living with illness or disability, and this gap between lifespan and healthy lifespan has widened over the past two decades ¹. Many of the conditions behind it develop quietly, over years. That sounds sobering at first. But it also means that what develops slowly can be spotted early and influenced early.

Why does a single blood test result tell you so little?

Because many blood markers respond to more than one cause. Ferritin, the protein that stores iron, is a good example. A low value suggests depleted iron stores. A high value can point to too much iron, but also to something entirely different: inflammation, liver disease or excess weight can raise ferritin as well ². The World Health Organization therefore recommends interpreting ferritin together with a marker of inflammation ².

The same number can tell two completely different stories. Only a look at the neighbouring markers, such as CRP as a marker of inflammation or transferrin saturation, reveals which one is true right now.

On top of that, a reference range describes what is common in the general population. It doesn't tell you what's favourable for you personally, or which direction your value is moving in.

What are the 12 mechanisms at speak23?

The 12 mechanisms are the framework we use at speak23 to read your blood results. We've mapped more than 75 blood markers to twelve biological processes, so each mechanism combines several markers that say more together than any of them could alone.

An important note: the processes themselves, such as insulin resistance, atherosclerosis or iron deficiency, are well researched and described in medical guidelines. Grouping them into exactly these 12 mechanisms and four pillars, however, is our own approach. It isn't an official medical classification, but a tool designed to make connections visible:

---

Metabolic health

Mechanism	What it's about
Insulin resistance	How well your cells respond to insulin, the "key" that lets sugar into cells
Atherosclerosis risk	How strongly blood lipids promote build-up in artery walls
Energy production	How well your body turns food into usable energy

Immune health

Mechanism	What it's about
Silent inflammation	Whether a quiet, persistent inflammation is running in the background (in research usually called "chronic low-grade inflammation")
Immune cell balance	How evenly the different types of white blood cells are distributed
Oxygen transport	How well red blood cells deliver oxygen to organs and tissues

Organ health

Mechanism	What it's about
Liver function	How well the body's metabolic hub is working
Kidney function	How reliably waste products are filtered from the blood
Muscle & organ stress	Whether muscles, the pancreas or other tissues are under strain

Micronutrient balance

Mechanism	What it's about
Iron metabolism	Whether your body has neither too little nor too much iron
Vitamin balance	How well you're supplied with vitamins such as D and B12
Electrolyte & mineral balance	Whether sodium, potassium, calcium and magnesium are in balance

---

The pillars help to organise things, nothing more. It gets really interesting where mechanisms work together across pillar boundaries.

How are the mechanisms connected?

More closely than any grouping suggests. Three examples show how markers from different pillars tell the same story.

Belly fat, blood sugar and blood vessels. Fat stored deep in the abdomen around the organs (visceral fat) is considered an independent risk marker for type 2 diabetes, atherosclerosis and cardiovascular disease ³. Fat stored in the liver is also linked to higher cardiovascular risk ³. Insulin resistance, liver function and atherosclerosis risk sit in two different pillars in our system, but biologically they hang on the same thread. A slightly raised fasting glucose looks harmless on its own. Combined with a large waist circumference and rising liver values, it forms a pattern that deserves early attention.

Iron and inflammation. The ferritin example above connects three mechanisms at once: iron metabolism, silent inflammation and oxygen transport. Iron is a key building block for making blood, and whether your iron stores are truly well stocked can only be judged in light of your inflammation markers ².

Kidneys and heart. Your kidneys do more than filter waste. European guidelines consider chronic kidney disease a factor that substantially raises cardiovascular risk ⁴. A kidney marker is therefore always a blood-vessel marker too.

Information that doesn't show up in your blood belongs in this picture as well: waist circumference, physical activity, smoking or medication all change how a value should be read.

Why does overall risk matter more than a single value?

Because risk factors don't simply add up; they amplify each other. European cardiovascular prevention guidelines therefore don't assess individual readings, but a person's overall risk based on several factors such as age, smoking, blood pressure and cholesterol ⁴. Whether and how intensively to act depends on that overall picture, not on a single number ⁴.

Imagine two people with the same cholesterol level. One also has a lot of belly fat, rising blood sugar and slightly raised inflammation markers. For the other, everything else looks unremarkable. Their lab reports show the same number twice. For their health, it doesn't mean the same thing.

To be honest, the overall picture also includes things no blood test measures. Blood pressure is one example: it's measured at your doctor's or at home, but it should be considered together with your blood results.

Why is the trend more important than the snapshot?

Because change is often more telling than a single reading. A value that slowly rises over two years tells a different story from the same value staying stable for years, even if both are within the reference range.

A study from Stanford University shows how much information these trends can hold: people at increased risk of diabetes were examined regularly and in great depth over several years. Dozens of clinically relevant findings came to light, and most participants changed their diet or exercise habits during the study ⁵. For context: far more was measured there than in a blood test, and the group was small. But the principle holds on a smaller scale too: if you look regularly, you see changes earlier and can respond earlier.

What happens at speak23?

At speak23 you don't get a lab sheet full of asterisks, but an analysis that brings your results together. Here's how it works:

Step	What happens
Blood draw	At a certified partner lab near you. We prepare the paperwork for you.
Analysis	More than 75 blood markers are measured in an accredited lab and validated by a physician.
Interpretation	Your results are mapped to the 12 mechanisms. For each mechanism you see an assessment, a clear explanation and which markers stand out, including across pillars.
Recommendations	Your most important starting points, ranked by priority, plus specific questions to discuss with your doctor.
Trend	You test again after 3 to 6 months. The app shows how your markers and mechanisms change.

What can you do?

"Know your numbers" is the starting point. The real strength lies in connecting those numbers and following them over time. Here's what that looks like in practice:

1. Measure regularly instead of checking once. With speak23 you measure more than 75 blood markers 2 or 4 times a year, so that individual snapshots become a trend.
2. See connections, not just single values. Your results are mapped to the 12 mechanisms. You see not only which value stands out, but also which mechanisms are linked and where a pattern is emerging.
3. Keep track of trends. All your results are recorded digitally and automatically. You can see trends and changes in the app without writing anything down yourself.
4. Act with purpose and see the effect. You receive personalised, evidence-based recommendations designed to steer your trends in the right direction. At your next test, the app shows how your actions are reflected in your results.
5. Consider what your blood doesn't show, and have unusual results checked by a doctor. Blood pressure and waist circumference belong in the overall picture. For unusual results, you get specific questions to take to your doctor. speak23 doesn't replace a diagnosis; it prepares you for that conversation.

What could prevention look like in the future?

Today's evidence is clear on one point: risk factors work together, and the overall picture says more than any single value ³⁴. What remains open is how much regular testing on its own prevents disease. What matters is what happens after the test, and that is exactly what researchers are now studying intensively.

We believe prevention could one day feel as natural as checking your bank balance: people know their numbers, understand how they connect, and see what their choices change. Medicine would shift from repair to guidance, away from "What's broken?" towards "How do I stay healthy?". Our approach at speak23 is a step in that direction: test regularly, make connections visible, act with purpose.

Over the coming weeks, we'll take a closer look at each of the 12 mechanisms, covering what research knows today and what you can influence yourself. Because the healthy years behind the big statistics aren't decided at some point in the distant future. They're decided in everyday life. And that makes it worth truly understanding your own numbers.