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Ferritin

7 min read
July 21, 2020

What role does Ferritin play in the body?

Ferritin is critical in keeping the amount of iron in the body balanced (homeostasis). Iron is needed for several critical processes within cells and ferritin makes sure it is available for them. Increasing research has shown that iron has a role in many conditions in the body too including inflammatory, malignant conditions such as cancer and neurodegenerative diseases. [2]

A low blood ferritin result indicates iron depletion and can be a marker for iron deficiency anaemia. Other conditions such as Hypothyroidism (underactive thyroid) and vitamin C deficiency can also lead to iron deficiency and low ferritin levels. [2]

Ferritin levels may be high because of iron overload which usually occurs over an extended period. This is where there is a large build-up of iron particularly in the heart and liver where it can cause injury. However, increased levels may also be a result of inflammation which may be due to injury, intense exercise or infection. [2]

How does Ferritin affect my wellbeing?

If you have reduced ferritin levels due to iron deficiency it can make you feel unwell. Some of the clinical symptoms of iron deficiency anaemia can include:

Pale skin
Fatigue
Very low energy levels
Headaches
Difficulty breathing
Dry skin and hair
Restless leg syndrome
Increased heartbeat

Anaemia can affect your ability to concentrate and may negatively affect your work performance. This is because there is a reduced transportation of oxygen in anaemia which can have a serious effect on your energy. [3] The red blood cells are smaller when anaemia is present causing fatigue and breathlessness.

How can I improve my result?

Your iron status can be improved or maintained with diet and adequate exercise.

Good sources of dietary iron include:

red meat – beef, lamb and pork
fish
poultry
dark green leafy vegetables – spinach, cabbage and broccoli
nuts
seeds
pulses [8]

Plant-based sources of iron such as dark green leafy vegetables, nuts, seed, pulses and fortified cereals may be absorbed better in the presence of vitamin C. [9] Try eating fortified breakfast cereals alongside a glass of orange juice or swap chips for a jacket potato with a side of green leafy veg – be sure to eat the skin of the potato.

You should also refrain from drinking tea with your meals as this can affect iron absorption. Instead, you should drink it between meals to ensure you absorb iron effectively. [10]

Both too much and too little iron can influence energy levels and could affect your ability to exercise. Low iron can also influence how well and quickly your muscles repair themselves after exercise. [11] Iron deficiency anaemia may also be more common in athletic groups and may need iron supplementation. [11]

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References

[1] Arosio, P., Elia, L and Poli, M. (2017). Ferritin, Cellular Iron Storage and Regulation. IUBMB Life: 69(6), pp 414-422.

[2] Knovich, M, A., Storey, J, A and Torti, S, V. (2009). Ferritin for the Clinician. Blood Reviews: 23(3), pp 95-104.

[3] Lopez, A., Cacoub, P., Macdougall, I, C and Peyrin-Biroulet, L. (2015). Iron Deficiency Anaemia. The Lancet.

[4] National Health Service. (2016). Haemochromatosis. Available at: https://www.nhs.uk/conditions/haemochromatosis/

[5] Adams, P, C., Barton, J, C., Guo, H., Alter, D and Speechley, M. (2015). Serum Ferritin is a Biomarker for Liver Mortality in the Hemochromatosis and Iron Overload Screening Study. Annals of Hepatology: 14(3), pp 348-353.

[6] Kell, D, B and Pretorius, E. (2014). Serum Ferritin is an Important Inflammatory Disease Marker, As It Is Mainly a Leakage Product from Damaged Cells. Metallomics: 6.

[7] Khan, A., Muhammad Khan, W., Ayub, M., Humayun, M and Haroon, M. (2016). Ferritin Is a Marker of Inflammation Rather than Iron Deficiency in Overweight and Obese People. Journal of Obesity.

[8] British Dietetic Association. (2017). Food Fact Sheet: Iron. Available at: https://www.bda.uk.com/foodfacts/iron_food_fact_sheet.pdf

[9] Lane, D, J, R and Richardson, D, R. (2014). The Active Role of Vitamin C in Mammalian Iron Metabolism: Much More than Just Enhanced Iron Absorption. Free Radical Biology and Medicine: 75, pp 69-83.

[10] Zijp, I, M., Korver, O and Tijburg, L, B, M. (2000). Effect of Tea and Other Dietary Factors on Iron Absorption. Critical Reviews in Food Science and Nutrition: 40(5), pp 371-398.

[11] Beard, J and Tobin, B. (2000). Iron Status and Exercise. The American Journal of Clinical Nutrition: 72(2), pp 594S-597S.

Medically reviewed

This information has been medically reviewed by Dr Nicola Keay.

Nicola has extensive clinical and research experience in the fields of endocrinology and sport and exercise medicine. Nicky is a member of the Royal College of Physicians, Honorary Fellow in the Department of Sport and Exercise Sciences at Durham University and former Research Fellow at St. Thomas’ Hospital.

Dr Nicola Keay

BA, MA (Cantab), MB, BChir, MRCP.