Iron Deficiency in Women: Signs You Are Missing and How to Fix It

Why Women Need More Iron Than Men

Iron deficiency is the most common nutritional deficiency in the world, and women bear a disproportionate share of its burden. The reason is fundamentally biological: menstruation. Each month during a normal period, a woman loses somewhere between 30 and 80 millilitres of blood. Blood is rich in iron - specifically in haemoglobin, the iron-containing protein in red blood cells that carries oxygen throughout the body. Every cycle, a meaningful amount of iron leaves the body with that blood, and if dietary intake does not compensate adequately, the deficit accumulates over time.

Women with heavy periods - a condition affecting roughly one in five women - lose significantly more iron with each cycle and are at particularly high risk. So are pregnant women (whose iron requirements nearly double to support the growing foetus and placenta), women who have recently given birth, women who are breastfeeding, and those following vegetarian or vegan diets, which tend to contain less bioavailable iron.

In India, iron deficiency anaemia is a major public health concern. The National Family Health Survey (NFHS-5) found that approximately 57 percent of Indian women aged 15-49 are anaemic - a staggering figure that reflects widespread inadequate intake combined with dietary patterns that include absorption-blocking compounds (phytates in wholegrains, tannins in tea and coffee) and insufficient haem iron from animal sources.

Understanding this context matters because iron deficiency exists on a spectrum. Full-blown iron-deficiency anaemia - when haemoglobin levels are clinically low - is the most severe form, but many women experience functional iron deficiency for months or years before reaching that threshold. Their haemoglobin may be technically normal while their iron stores (measured as ferritin) are depleted, causing symptoms that are very real but easily dismissed or misattributed.

Signs You May Be Iron Deficient

Iron deficiency rarely announces itself dramatically. It tends to creep up gradually, and its symptoms overlap with so many other conditions - stress, poor sleep, thyroid problems - that it is easily missed. Here are the most important signs to recognise.

Persistent, Unexplained Fatigue

This is the cardinal symptom. Iron is required for haemoglobin production, and haemoglobin delivers oxygen to every cell in your body. When iron stores are low, oxygen delivery is compromised, and your cells - including brain cells and muscle cells - cannot produce energy efficiently. The result is a fatigue that feels different from ordinary tiredness: it is pervasive, unrelieved by sleep, and often accompanied by a general sense of heaviness and low motivation. Many women with iron deficiency describe feeling as if they are moving through water.

Hair Loss and Shedding

Hair follicles are among the most metabolically active cells in the body, which makes them highly sensitive to nutritional deficiencies. Iron is required for follicle cell division and for the production of the enzymes involved in hair growth. Iron deficiency - particularly low ferritin - is a well-documented cause of telogen effluvium, the type of diffuse hair loss where a large percentage of hairs shift simultaneously into the shedding phase. If you are noticing more hair than usual on your pillow, in your hairbrush, or blocking the shower drain, a ferritin test is worth requesting before reaching for expensive hair supplements.

Pale or Yellowish Skin

Skin colour is partly determined by haemoglobin concentration in the blood vessels beneath the skin. When haemoglobin is low, the skin loses its natural warmth and pinkness, appearing paler or in some cases slightly yellowish. This is most visible in the inner lower eyelids - if you pull down your lower eyelid gently and the inner surface looks pale pink rather than a rich red, this can be a sign of anaemia. Nail beds and the palms of the hands can also appear pale.

Cold Hands and Feet

Iron deficiency reduces red blood cell count, which in turn reduces the blood's capacity to carry heat to the extremities. Many iron-deficient women report chronically cold hands and feet even in warm environments - a symptom often dismissed as poor circulation but which improves dramatically once iron stores are restored.

Restless Legs Syndrome

The uncomfortable urge to move the legs at rest - particularly in the evenings and at night - is directly linked to iron status in a significant proportion of people. Iron is required for the production of dopamine in the brain, and dopamine plays a key role in the neurological pathways that control leg movement. Low ferritin levels are consistently found in those with restless legs syndrome, and iron supplementation is often the first-line treatment. If you experience this symptom, check your ferritin alongside a standard haemoglobin test.

Unusual Food Cravings (Pica)

A strange but well-documented symptom of iron deficiency is pica - the craving for non-food substances such as ice (pagophagia), dirt, chalk, or raw starch. More commonly in Indian women, this manifests as an unusual craving for ice or very cold water. If you find yourself craving ice or have had the urge to eat non-food items, this is a relatively specific indicator of iron deficiency and warrants a blood test.

Shortness of Breath and Heart Palpitations

In more significant iron deficiency, the heart works harder to compensate for reduced oxygen delivery, leading to a racing or pounding heartbeat (palpitations) even at rest or with minimal exertion. Climbing stairs or walking briskly may leave you more breathless than your fitness level would predict. These symptoms reflect the cardiovascular system's attempt to compensate for reduced blood oxygen-carrying capacity.

Plant vs Haem Iron: Understanding the Difference

Not all iron is absorbed equally, and this distinction is particularly important for vegetarians and vegans. Haem iron, found in animal products - particularly red meat, liver, and shellfish - is absorbed at a rate of approximately 15-35 percent, and the absorption is relatively unaffected by other dietary factors. Non-haem iron, found in plant foods, is absorbed at only 2-20 percent and is significantly influenced by what else you eat alongside it.

Good plant sources of non-haem iron include: spinach, methi (fenugreek leaves), curry leaves, moringa (drumstick leaves - exceptionally iron-rich), rajma (kidney beans), chana (chickpeas), masoor dal, tofu, pumpkin seeds, sesame seeds, dried apricots, and jaggery (though jaggery's iron content is modest). Liver - if you eat meat - is among the most concentrated dietary sources of haem iron available and was traditionally consumed precisely because of its nutritional density.

Absorption Tips: How to Get More Iron From Your Food

Because non-haem iron is the primary source for most Indian women, maximising its absorption is critical. Several simple strategies make a meaningful difference.

Pair iron-rich foods with vitamin C. Vitamin C dramatically enhances non-haem iron absorption - in some studies by up to four times. Practical applications include: squeezing lemon over dal, eating amla alongside iron-rich meals, adding tomatoes or bell pepper to sabzi, or drinking a small glass of fresh orange juice with a meal containing iron-rich foods.

Avoid tea and coffee around mealtimes. The tannins in tea and the chlorogenic acids in coffee form insoluble complexes with iron that cannot be absorbed. This effect is significant - drinking tea with a meal can reduce iron absorption from that meal by up to 60 percent. Indian women who drink multiple cups of chai throughout the day - often with or immediately after meals - are substantially limiting their iron absorption. Even herbal teas containing tannins (like chamomile) have a similar though milder effect. Leave at least an hour between a meal and your chai.

Cook in iron cookware. Cooking acidic foods (like tomato-based curries, tamarind dishes, or anything with lemon) in cast iron cookware leaches meaningful amounts of iron into the food. This is an ancient practice with a modern evidence base - studies have shown that food cooked in iron pots can have significantly higher iron content than the same food cooked in non-iron vessels.

Soak, sprout, and ferment grains and legumes. These processes reduce phytate content - the compound in wholegrains and legumes that inhibits mineral absorption including iron. Soaking rajma overnight, allowing dal to ferment slightly before cooking, or eating sprouts instead of unsoaked seeds all improve the iron that your body can extract.

When to Test Your Ferritin Levels

This is important: a standard haemoglobin or complete blood count (CBC) test can appear normal even when your iron stores are significantly depleted. The reason is that your body prioritises keeping haemoglobin within the normal range for as long as possible - it draws on stored iron (ferritin) to do this. By the time haemoglobin falls, you have typically been iron-depleted for quite some time.

Ferritin is the protein that stores iron in the body, and a ferritin test directly measures those stores. It is a simple blood test, inexpensive, and far more informative than haemoglobin alone for detecting early or functional iron deficiency. Ask your doctor specifically for a serum ferritin test alongside any routine blood work. Many functional medicine practitioners consider an optimal ferritin level for women to be 50-100 ng/mL - significantly higher than the laboratory "normal" range, which often bottoms out around 12-15 ng/mL.

If you have symptoms of iron deficiency, a ferritin below 30 ng/mL is a meaningful finding even if it is within the lab's reference range. Discuss with your doctor whether a therapeutic trial of iron supplementation is appropriate. Iron supplements should generally be taken with vitamin C (or a vitamin C-rich food) and away from calcium-rich foods, medications, and tea or coffee for best absorption. Your doctor can guide you on the appropriate form and dose - iron bisglycinate is typically well-tolerated and causes fewer gastrointestinal side effects than ferrous sulphate.