Does a Lack of Iron Cause Hair Loss

Hair loss is something that affects millions of people at different stages of life, and while it is often linked to genetics or age, nutritional deficiencies can also play a role. One of the most common and often overlooked causes of hair thinning is a lack of iron. Iron is a vital mineral involved in many functions in the body, including the production of healthy blood cells. When iron levels are low, it can affect the way your body supports hair growth, sometimes leading to noticeable shedding or thinning over time.

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The Role of Iron in Hair Health

Iron is essential for making haemoglobin, a component of red blood cells that carries oxygen to your tissues and organs. Your hair follicles rely on a healthy blood supply to grow strong and thick hair. When you are low in iron, your body prioritises supplying oxygen to essential organs, and the hair follicles can fall lower on the list. This means they may not get the nutrients or oxygen they need to support the hair growth cycle. As a result, hair can enter a resting phase prematurely, leading to increased shedding, reduced volume and slower regrowth.

Although the link between iron deficiency and hair loss has been observed in both men and women, it is particularly common in women due to menstruation, pregnancy and dietary patterns. Hair loss related to low iron is typically diffuse, meaning it affects the whole scalp rather than creating bald patches. It may not always be dramatic, but over time, the cumulative thinning can become more noticeable.

How to Know if Iron Deficiency is Causing Hair Loss

If you are experiencing hair thinning and suspect it might be related to iron, it is worth considering other symptoms too. Common signs of iron deficiency include fatigue, pale skin, shortness of breath, dizziness, cold hands and brittle nails. However, it is important not to self-diagnose. The only way to confirm low iron levels is through a blood test, which will measure things like serum ferritin, haemoglobin and transferrin saturation. This is usually done through your GP or a private clinic.

In terms of hair loss, trichologists and dermatologists often find that people with ferritin levels below a certain threshold may experience shedding, even if their general haemoglobin is within normal range. Ferritin is a protein that stores iron, and low ferritin may indicate a lack of stored iron, even before anaemia develops.

Restoring Iron and Improving Hair Growth

If iron deficiency is confirmed, treatment usually includes dietary changes, oral iron supplements or, in more serious cases, iron infusions. It is important to follow medical advice when taking iron supplements, as too much iron can cause its own set of health problems. Eating iron-rich foods, such as red meat, lentils, dark leafy greens and fortified cereals, alongside vitamin C sources can also help boost absorption.

Once iron levels are restored, hair growth may gradually return to normal, but it is not immediate. Hair grows in cycles, and it may take a few months for shedding to slow down and for regrowth to be noticeable. In some cases, especially if hair has become dry or brittle during a period of deficiency, extra support from nutrients like collagen may be helpful.

Can Collagen Support Hair During Iron Deficiency Recovery?

While collagen does not replace iron, it can play a supportive role during hair recovery. Collagen contains amino acids that contribute to the structure of keratin, the protein that makes up hair. It also supports skin health, including the scalp, which can sometimes become more sensitive or prone to flaking during times of stress or nutrient depletion.

Collagen supplements are often used by people looking to improve the appearance of hair, skin and nails. During or after a period of iron deficiency, they may help restore a healthier hair texture and support the conditions needed for growth. Although collagen will not prevent hair loss caused by low iron, it may complement a balanced approach that includes restoring nutrients, protecting the scalp and supporting overall wellness.

Other Factors to Consider

Hair loss is complex and can be influenced by many things at once. Stress, hormonal changes, underlying health conditions and hair styling practices can all affect hair health. If you suspect your iron levels are affecting your hair, addressing this is a good first step. However, it is also wise to consider a holistic approach that includes managing stress, caring for your scalp and avoiding excessive heat or chemical damage.

Supporting your body with the right nutrients, including iron, collagen, zinc, vitamin C and biotin, can help build a strong foundation for healthy hair. Regular blood tests, a varied diet and supplement support when needed can all play a part in maintaining that foundation over time.

Conclusion

Iron deficiency is a well-recognised cause of hair loss, especially in women. If you are noticing more shedding than usual and feeling low in energy, it may be worth speaking to your GP about getting your iron levels checked. While the journey to hair regrowth may take time, the body can often bounce back with the right support. Rebuilding your iron stores, taking care of your scalp and incorporating supportive nutrients like collagen can all help restore confidence and vitality.