If your skin has looked flat and pale for months, your hair seems to be coming out more than usual and your nails keep splitting, it is natural to reach for a new serum. Sometimes that is the right answer. Sometimes, though, the skin is telling you something about what is happening on the inside, and low iron is one of the more common reasons.
You may have seen the phrase "ferritin face" online this autumn. It is not a medical diagnosis, but it describes something I do see in clinic: skin that has lost its colour and life because the body is short of iron. Here is how I would think about it, as a nurse prescriber.
What ferritin actually is
Iron helps your red blood cells carry oxygen around the body, including to your skin and hair follicles. Ferritin is the protein that stores iron, and a blood test for ferritin gives a good picture of how much you have in reserve.
Your stores can run low for a long time before you become anaemic. That is one reason the signs can be easy to miss: they creep in slowly, and they look a lot like ordinary tiredness or a bad winter for your skin.
Signs that may point to low iron
None of these on its own means your iron is low, and every one of them has other possible causes. It is the pattern that is worth noticing.
- Skin that looks pale or sallow, with less natural colour in the face, inner eyelids and lips.
- Dryness or itching that does not settle with a sensible routine.
- Hair shedding, often noticed in the shower or on the brush, rather than patchy loss.
- Brittle or ridged nails, and in some people nails that start to dip in the middle.
- Sore cracks at the corners of the mouth, or a sore, smooth tongue.
- Tiredness, breathlessness on stairs, cold hands and feet, or finding it harder to concentrate.
Who is more likely to run low
Some people are simply more at risk. Heavy periods are the most common reason I see in women of working age. Pregnancy and the months after it, a mostly plant-based diet that has not been carefully planned, regular blood donation, endurance sport, and conditions that affect how the gut absorbs nutrients, such as coeliac disease, can all play a part.
If any of these apply to you and the signs above sound familiar, it is worth asking the question.
Why a blood test comes before a supplement
It is tempting to buy iron tablets and see what happens. I would ask you not to. Iron is one of the few supplements where too much can genuinely cause harm, and some people store iron too readily without knowing it. Tablets can also upset the stomach and cause constipation, and taking them blind can mask a cause that needs looking into, such as unexplained blood loss.
The sensible first step is to speak to your GP, describe what you have noticed, and ask whether a blood test, including ferritin, is appropriate. If your levels are low, your GP can advise on the right treatment, how long to take it, and when to recheck. Please also keep any iron tablets well out of reach of children, as an accidental overdose can be very serious for them.
Food still matters
Whatever your results, a diet with good sources of iron supports healthy stores. Red meat, oily fish, eggs, beans, lentils, tofu, dark leafy greens, dried fruit and fortified cereals all contribute. Iron from plant foods is absorbed less easily, but eating it with something rich in vitamin C, such as peppers, citrus fruit or tomatoes, may help. Tea and coffee with meals can reduce absorption, so having them between meals instead is a small change that can add up.
Where skin treatment fits
If your skin looks dull because your iron is low, no peel or serum will fully put that right until the cause is addressed. That is exactly why we ask about your general health, diet, periods and medication before we suggest anything. Once any underlying issue is being managed, a good skincare routine and, where it suits you, in-clinic treatment may help restore brightness and texture. Results vary, and timescales depend on the cause.
If you would like to understand why your skin looks the way it does, our page on dull skin covers the most common causes, and a consultation is the place to talk it through. If we think something needs checking with your GP first, we will tell you honestly.
