Hoppa till huvudinnehåll
Hair condition

Iron deficiency and hair loss

Low iron stores (low ferritin) are one of the most common hidden causes of hair loss — especially in women. Usually reversible once iron is replenished.

Common symptoms
  • Diffuse thinning across the whole head
  • Increased shedding in the brush and shower
  • Fatigue, paleness and breathlessness
  • Brittle nails
Common causes
  • Low ferritin / iron deficiency
  • Heavy menstruation
  • Vegetarian/vegan diet without compensation
  • Poor iron absorption
Treatment options
  • Blood test + iron supplements (on a doctor's advice)
  • Iron-rich diet
  • PRP as support
  • Time — the hair recovers
Iron is one of the nutrients the hair follicles depend on most, and iron deficiency is one of the most common hidden causes of hair loss — especially in women of fertile age, pregnant women, athletes and people on a vegetarian or vegan diet. The important thing to understand is that you can have iron deficiency affecting the hair long before you become anaemic. The follicles react already to low iron stores, measured as ferritin. Many people are told their "blood count is normal" but still have a low ferritin that is enough to trigger diffuse hair loss. That is why ferritin is the test we recommend asking for with hair-related iron deficiency. The shedding resembles telogen effluvium: a diffuse thinning across the whole head, often with noticeably more hair in the brush. When the iron stores are replenished — through diet and, if needed, supplements on a doctor's advice — the hair usually recovers within 3–6 months. Because hair grows slowly, the improvement shows with a delay. At Hair TP Clinic we often meet patients who spend money on hair products when the solution is really to correct a low ferritin. At a free consultation we assess your scalp and recommend blood tests if the pattern points to a nutritional deficiency. PRP can support the follicles during recovery, but the fundamental thing is to address the iron deficiency.

Read more about PRP treatment as support or the article Diet and hair loss — what you eat and how it affects your hair — or book a free consultation.

Frequently asked questions

Questions about iron deficiency and hair loss

Can iron deficiency really cause hair loss without me being anaemic?

Yes. The follicles react already to low iron stores (low ferritin), long before you become anaemic. That is why a "normal blood count" can still hide an iron deficiency that affects the hair.

Which blood test should I ask for?

Ferritin is the most important test for hair-related iron deficiency, because it shows the iron stores. Ask for ferritin specifically — not just Hb (blood count), which can be normal despite low stores.

How long until the hair recovers?

Usually 3–6 months after the iron stores are replenished, because hair grows slowly. Supplements should be taken on a doctor's advice — too much iron is not good.

Ready to start?

Why wait? Book your consultation today

We want you to feel confident in your choice. We answer your questions and show how a treatment can be performed, completely free of charge.

Hair TP Clinic