Iron is one of the most important minerals for our body and, nevertheless, its deficiency is one of the most widespread nutritional deficiencies, especially among women of childbearing age, athletes, and people with restrictive diets. When iron levels fall below what is necessary, the body cannot produce enough hemoglobin, the protein responsible for transporting oxygen through the blood, and what we know as iron deficiency anemia appears. In this article, we explain how to recognize the symptoms of iron deficiency, why it occurs, and what you can do to safely restore your levels.

What is iron deficiency and why is it so common?

Iron is involved in essential functions: it is part of hemoglobin, participates in cellular energy production, and is key for the proper functioning of the immune system. It is estimated that iron deficiency is one of the most frequent nutritional deficiencies worldwide, and in Spain it especially affects women with heavy periods, pregnant women, vegetarians or vegans, and endurance athletes. The reason is simple: these groups have higher iron needs or greater losses, and if the diet does not compensate for them, the body's iron stores (ferritin) gradually decrease until the first symptoms appear.

Symptoms of iron deficiency anemia: how to recognize them

Iron deficiency does not always manifest suddenly; it usually sets in progressively, which leads many people to normalize symptoms that actually indicate a deficiency. The most common signs include persistent fatigue even after sleeping well, pallor in the skin and mucous membranes, difficulty concentrating, frequent dizziness or headaches, weak or brittle nails, hair loss, a feeling of cold in the hands and feet, and palpitations or shortness of breath when exerting oneself in ways that were previously easy. If you recognize several of these symptoms, it is advisable to request a blood test that includes ferritin, hemoglobin, and serum iron before starting any supplementation.

Main causes of iron deficiency

Women and menstrual losses

Women with heavy periods lose significant amounts of iron each month, making them one of the groups at highest risk of iron deficiency anemia. Pregnancy and lactation also significantly increase the daily needs of this mineral. For this reason, within our women's health collection, you will find formulations specifically designed to support these stages.

Athletes and increased needs

Intense physical exercise, especially in endurance sports such as running or cycling, increases iron depletion due to increased red blood cell turnover and intestinal micro-bleeding associated with impact. If you train regularly, you may be interested in reviewing our sports nutrition section, where you will find products formulated to support performance and recovery.

Other common causes include poorly planned vegetarian or vegan diets, digestive problems that hinder mineral absorption, and certain chronic diseases. Therefore, maintaining good gut health is also relevant, and our digestion collection can be a good starting point if you suspect that absorption is part of the problem.

Iron-rich foods: heme and non-heme

There are two types of iron in food. Heme iron, found in red meat, poultry, fish, and seafood, is more easily absorbed. Non-heme iron, from legumes, nuts, seeds, spinach, and whole grains, is absorbed to a lesser extent, but its bioavailability significantly improves if combined with vitamin C-rich foods, such as citrus fruits, peppers, or kiwi, in the same meal. Conversely, tea, coffee, and dairy products consumed with main meals can hinder iron absorption, so it is advisable to space them out by at least an hour.

How to restore your iron levels: smart supplementation

When diet is not enough to correct an established deficiency, iron supplementation may be necessary, always under professional supervision and with a prior analysis confirming the deficiency. There are different forms of supplementary iron, from classic ferrous sulfate to gentler forms for the stomach such as iron bisglycinate, which tend to cause fewer digestive discomforts. Combining the supplement with vitamin C enhances its absorption, while taking it away from coffee, tea, or calcium and magnesium supplements significantly improves results. It is also common to reinforce supplementation with vitamin B12 and folic acid, as both work with iron in the formation of healthy red blood cells. If you also seek to keep your defenses strong during the recovery process, our defenses and immunity collection includes very useful complementary options, and for broader nutritional coverage you can also consult the multivitamins in our catalog.

When to consult a professional

Iron deficiency anemia should not be self-diagnosed or self-treated without supervision, as an excess of iron can also be harmful. If you notice unexplained fatigue, paleness, hair loss, or frequent dizziness, the most prudent thing to do is to consult your doctor or pharmacist to assess a complete blood test. From there, you can jointly decide if iron supplementation, along with dietary adjustments, is the best option for your specific case.

At AndaVida, we want to support you in caring for your well-being with clear information and quality products. If, after consulting with a professional, you confirm that you need to boost your iron levels, discover our complete selection of vitamins and minerals at andavida.es and find the option that best suits your needs.