Understanding low iron levels – why iron, ferritin and transferrin should always be considered together

Low iron levels – tiredness, exhaustion, concentration problems, inner weakness or the feeling of not really being able to cope with stress – many people have their iron levels checked at such times. And if low iron levels are found, the recommendation is often to take iron. But it’s not that simple.

Iron is not an isolated blood value, but part of a finely tuned system. And I am convinced that this system has two levels, both of which need to be considered if something is really to be set in motion.

In this article, I will first explain the physical level of iron balance: what iron, ferritin, transferrin and the transferrin saturation level mean, how they interact and why they should always be considered together. Because this basic understanding is important – it forms the foundation.

But the level that is much more important to me personally, which I experience time and again in my practical experience as the decisive one and which, in my opinion, only brings about an actual, lasting change, is another: the psychological and emotional level. Because in the vast majority of cases, there is more than just a physical cause behind low iron levels. There is a person behind it – with their history, their patterns and what they have learned over the years about how they treat themselves.

So let’s start with the body first. And then come to what really counts.

A physical, factual look at the blood values that are part of the iron balance

The iron

When the blood test mentions “iron”, it is easy to get the impression that it is simply a matter of eating more iron-rich foods or taking a supplement if iron levels are low. But this is exactly where one of the biggest misunderstandings surrounding this mineral begins.

This is because edible iron – i.e. iron from food or food supplements – is initially just a raw material. Whether it is actually available to the body depends on much more than the amount on the plate: on the intestinal mucosa, stomach acid, existing inflammation, current stress levels and accompanying substances such as vitamin C, copper or zinc. Therefore, taking in more iron does not automatically mean that the body is better supplied.

Iron in the blood – the active iron

The iron level in the blood shows how much iron is currently in circulation – i.e. how much is immediately available for oxygen transport, cell supply, energy production and the ability to concentrate. A low value initially signals that the body has too little iron for its current tasks.

However, this value alone says nothing about whether reserves are still available – or whether the body may be deliberately retaining iron.

Ferritin – the storage iron

Ferritin provides information on how well the iron stores are filled. In a way, it is the depot from which the body supplies itself when needed – especially in the liver, spleen, bone marrow and muscles. The crucial question that ferritin answers is: does the body still have reserves – or are the stores already depleted?

If iron is low, it therefore makes a big difference whether ferritin is also low or whether the stores are still sufficiently full. Only this combination allows a meaningful interpretation.

Transferrin – the transport protein for iron

Iron cannot circulate freely in the body. It needs a transport vehicle: the protein transferrin. Transferrin binds iron and transports it to where it is needed. Without sufficient transferrin, iron can neither be effectively transported nor used – and in the worst case can even cause oxidative stress.

If transferrin is low, the problem with low iron levels is therefore not the iron itself, but the fact that there is not enough protein to bind and transport it. Possible causes for this are insufficient protein intake, digestive problems or impaired absorption in the intestine. In such a case, it would make more sense to support the protein supply and digestion first, instead of only supplying iron.

Transferrin saturation level – is the iron bound at all?

The degree of transferrin saturation shows how much of the available transferrin is actually loaded with iron. It answers the question: Is the iron bound at all – or does capacity remain unused?

If there is a lot of transferrin, but saturation is low, this means that the transport capacity is there, but iron is not sufficiently bound. If there is little transferrin but high saturation, the body is making maximum use of the little that is available. These constellations make it clear that no single value is meaningful on its own.

Why iron levels fall – and why immediate supplementation is often not the solution

Low iron levels are very often not caused by insufficient intake, but by losses or increased consumption. Regular blood loss – whether due to heavy menstruation, bleeding gums or bleeding in the gastrointestinal tract – automatically leads to a loss of red blood cells and thus to iron loss. Chronic or acute inflammations also play an important role: they consume iron and at the same time the body deliberately withholds iron because it could intensify inflammatory processes. In this case, a low iron level can even be a protective mechanism.

This is why it is so important to first ask yourself the question when iron levels are low: Why is my body losing or using up iron? Are there any inflammations, perhaps in the teeth, joints or intestines? Is there bleeding, even occult, invisible bleeding? Supplementation only really makes sense once these causes have been clarified – otherwise iron supplements can cause stomach problems, nausea or constipation without solving the actual problem.

And now to the most important thing

We have now looked at what iron, ferritin, transferrin and the transferrin saturation level mean at a physical level. We have looked at what role copper and vitamin C play, why supplementation alone is often not the solution and how complex the iron system in the body really is.

But all this – as important as it is – is only half the story in my view.

This is because my practical experience has shown the same thing time and time again: in the vast majority of cases, there is more than just a physical cause behind low iron levels. There is a person behind it – with their history, their patterns, their unconscious beliefs and what they have learned over the years about how they treat themselves.

I am convinced that the psyche is the real cause in most cases. Not the only one – but the deepest. And as long as it is not considered, many things go round in circles.

So let’s move on to the aspect that is still far too rarely given a place in traditional medicine – and which, in my view, is the decisive one.

Iron – can I really be alive? And how stable am I within myself?

Iron is the mineral that literally makes life possible. Without iron there is no oxygen transport, without oxygen transport there is no energy, without energy there is no real vitality. And this is exactly what is often reflected in what people with low iron levels describe – not just physical exhaustion, but something deeper: an inner no longer being there. Being present, but not really present. Functioning, but not living.

But iron doesn’t just stand for vitality. It is one of the most stable metals of all – and it also carries this quality to the psychological level. Iron stands for inner stability. For a foundation that holds – regardless of what comes from outside.

And that leads to a question that is worth asking honestly: How stable am I within myself?

Not in the sense of inviolability. But in the sense of: Where is my inner foundation? What holds me when things get difficult? When criticism comes, when someone questions something about me, when an attack from outside hits me – how do I react internally? Does everything immediately start to shake, or is there something inside me that remains calm? A core that knows who I am, even if someone else doubts it?

Many people unconsciously build their inner stability on external pillars. On relationships that provide security. On work, which provides identity and recognition. On their role in the family, the social structure, the image that others have of them. This is deeply human – and fragile at the same time. Because what happens if one of these pillars falls away? If a relationship breaks down, a job is lost, an important role changes? Then the foundation can shake – not because you are weak, but perhaps because it was never really anchored inside you.

For example, low iron levels can be an indication of low inner stability – of a foundation that is not supporting itself, perhaps because it was never really anchored inside or because the burden of life is currently exceeding it.

However, the reverse is also worth looking at. An elevated iron level is not automatically a sign of strength. It can sometimes indicate a kind of artificial stability – too much tension disguised as strength. People who have to function. Who are not allowed to show weakness – or at least not allow themselves to do so. Who have been strong for so long that they no longer know what it feels like to simply be without performing.

This kind of stability is not grown – it is built. With willpower, with control, with a silent promise to yourself: If only I am strong enough, nothing will happen to me. This is particularly familiar to people who have to be there for others – often without a break, often without anyone asking how they themselves are doing. Mothers who have to work every morning, look after the children, cope with everyday life, be strong – even when they have long since reached their inner limit. People who care for relatives and whose own exhaustion has disappeared somewhere in the background because there is simply no room for it. People who have a role from which they cannot simply remove themselves – and who have learned to pack away their own weakness so deeply that they barely feel it themselves.

To the outside world, these people often appear stable, reliable and unshakeable. And they are – but not out of inner strength, but out of inner necessity. Because there seems to be no other option. Because someone else needs them. Because everyday life won’t wait.

But stability based on constant tension costs an enormous amount of energy. And at some point, the body demands this – in one way or another.

Furthermore, iron has always had a very specific signature in the world of metals, planets and healing stones. It is the metal of Mars – the planet that stands for strength, courage, assertiveness and defense. And thus also for what is traditionally referred to as the masculine principle: the ability to assert oneself. To draw boundaries. To stand up for yourself. To actively shape instead of passively endure.

These are qualities that have nothing to do with gender – they are inherent in every person. And yet there is often a deep dissonance here: how well can I assert myself? Do I trust myself to stand up for my own needs? Am I allowed to show strength – or have I learned that this is dangerous, undesirable, too much?

Iron also stands for defense – the healthy ability to protect oneself. To set yourself apart. To say no. Not to simply let attacks from outside get through. If this inner Mars principle is missing, there is often a lack of stability – because those who cannot protect themselves are easily shaken.

Ferritin – what can I keep for myself?

From iron, the path naturally leads on to the next level: to what is stored. Ferritin shows what is available when the current supply is no longer sufficient – the hidden reserves that the body draws on when the acute supply is exhausted.

Psychologically, this is a remarkably deep metaphor. What do I have in store for myself? What can I keep – in terms of energy, resources, inner space?

People with low ferritin often report not only empty stores in their blood, but also the feeling that they have been living on reserves for a long time. They have repeatedly given – to others, to tasks, to expectations – without really filling up. Sometimes this has biographical roots: an early learning that one’s own needs have to wait. That caring for others is more important than caring for yourself. That it would be almost selfish to keep something for yourself.

Here it is worth asking the honest but gentle question: Do I even allow myself to have reserves? Are there real recovery phases in my life – not as a reward for work done, but simply because I need them? Or is every effort immediately followed by the next, because standing still feels wrong or even dangerous?

Low ferritin levels are strikingly common in people who are strong for others but forget themselves. Ferritin is a reminder that reserves are not a luxury. They are a necessity.

Transferrin and transferrin saturation level – can I accept what is offered to me? And can I take it?

Iron cannot circulate freely in the body. Uncontrolled, it would have a toxic effect – causing oxidative stress, damaging cells and causing harm. To prevent this from happening, transferrin is needed: the transport protein that binds iron, moves it safely through the body and only then makes it usable. Without transferrin, iron not only remains unused – it becomes a danger.

And it is precisely in this quality – binding, transporting, setting in motion – that the psychological depth of this value lies.

Because transferrin/saturation basically poses two very human questions: To what extent have I learned to take? And am I even in a position to form bonds?

Give and take should be in balance. That sounds simple – and yet for many people it is one of the most difficult tasks of all. Because giving often feels safe. Controllable. You know where you stand. Taking, on the other hand, means showing yourself. Being needy. Getting involved with someone – and thus becoming vulnerable. Many people have never really learned to take. Not because they don’t want to, but because it feels wrong. Too much. Inappropriate. As if they were a burden on someone.

A lowered transferrin is often found in precisely these people – in those who give and give without really being able to receive. Those who feel uncomfortable receiving, who refuse help even when they need it, who can hardly let the care of others land. But transferrin also stands for attachment itself – for the ability to connect in the first place. And so another, often very old question arises here: Can I form bonds? Do I want to? Do attachments feel secure – or do they tend to be associated with pain, loss or disappointment in my experience? Where are my fears when it comes to real closeness?

Increased transferrin, on the other hand, indicates that there is a lot of binding capacity – a lot of opportunity to connect, absorb and accept.

And this is where it becomes particularly interesting when you look at the values in combination. Because it is the interplay that tells the real story.

If the iron is low, the transferrin is high and the transferrin saturation level is low, then on a physical level this means that the transport capacity is there, but the iron is not bound. In psychological terms, this could mean: I would have the ability to form bonds. I would have the capacity to build up stability, to accept, to receive. But I don’t do it. I don’t take the stability – even though I could. The possibility is there, but something is stopping me from really making use of it. Maybe fear. Maybe old experiences. Maybe the deep, unconscious conviction that it’s safer to stay alone.

Depending on which combination of values is shown, different psychological meanings naturally result. There is no single interpretation – but a system that always needs to be read in context. Just as a person can never be understood from a single characteristic, but always as a whole.

Copper and iron – when the female principle brings the male principle to life

Iron cannot work in the body on its own. It needs support – and one of the most important comes from copper. This is because copper plays a key role in enabling iron to be converted into its active form, mobilized from storage and incorporated into the red blood cells. Without sufficient copper, iron remains unfinished, so to speak – available but not fully usable. An iron deficiency that does not improve despite sufficient intake often has a copper deficiency as a silent background.

And here – on a symbolic level – it becomes truly remarkable.

Because in the world of planetary associations, copper belongs to Venus. The planet of harmony, connection, beauty and the ability to relate. To the feminine principle – to the quality of receiving, of connecting, of entering into a relationship.

Iron, on the other hand, the metal of Mars, stands for the masculine principle: strength, assertion, stability, defense.

And now the amazing thing: It is precisely the female principle – copper, Venus – that makes the male principle complete. Without copper, iron cannot develop its power. Without the connecting, harmonizing, relational element, the strong, assertive element cannot really take effect. Only through this connection – through the interplay of both principles – does what the body needs arise: functioning, living strength.

This is perhaps no coincidence. It is a very old truth that biochemistry confirms here in its own sober way: Strength needs connection. The masculine needs the feminine. And only when the two are in balance does the full potential unfold. So – if your iron levels are low, you should always take a look at your copper too!

Vitamin C and iron

It is also worth mentioning that iron is dependent on companions – not only on copper, but also on vitamin C. This is because vitamin C is one of the most important cofactors for iron absorption: it converts plant iron into a form that can be absorbed by the intestine and significantly increases the bioavailability of iron in the intestine. Anyone who eats iron-rich foods but suffers from a vitamin C deficiency at the same time will have little of it despite sufficient intake. The two belong together – biochemically inseparable.

Iron supplementation – does supplementation make sense?

The most common reaction to low iron levels is a familiar one: prescribing iron. Often without looking at the overall picture – without ferritin, without transferrin, without asking why the body has too little iron in the first place or why it is not retaining it. A value is low, so it is substituted. This is how a large part of therapeutic practice relating to iron works.

There is a lot to consider – both on a physical and psychological level.

First the obvious: Iron supplements need vitamin C in order to be absorbed at all. Without this cofactor, a large part of the effect is lost. At the same time, the majority of people simply do not tolerate iron tablets well – constipation, stomach pain and nausea are not rare side effects, but the rule. And the solution of taking higher doses of vitamin C orally does not work for everyone – because how well this is tolerated depends largely on the condition of the gastric mucosa.

In the case of severe iron deficiency, some doctors resort to iron infusion. It is considered to be quick and effective – and at the same time is what I would call a rush therapy. Because with an infusion, you basically leave the body no choice. It cannot regulate, cannot dose, cannot decide whether and how much it wants to absorb. The iron is simply administered – whether the body is ready or not. I am therefore not surprised that iron infusions are often poorly tolerated and have side effects. Unless you are the “close your eyes and go for it” type – then this may be the right strategy.

But the aspect that is most important to me from my experience is another.

If the psychological part is not considered – if no one asks what is behind the iron deficiency on a deeper level – then pure physical supplementation is often of little use in my view. And there is a very specific reason for this.

If someone is not yet psychologically at the point of accepting stability – if the topic of attachment, self-worth or inner strength has not even been touched upon – then the body, the psyche, will be overwhelmed by the sudden supply of iron. Because at this level, iron means: Stability. Strength. Asserting yourself. Forming bonds. And if all of this has not yet been psychologically processed, not even looked at, then it is too much for many people internally when the body is suddenly pushed in this direction – without the soul having gone along with it.

That’s why, for me, it always involves explaining to the person what psychological aspect could be behind their iron balance. And then – gently, without pressure – to ask: Do you feel ready for this issue to change?

Because sustainable change never starts in the blood. It begins in consciousness.