The Importance of Iron Supplements in Daily Health

Iron deficiency is the most widespread nutritional deficiency in India, and it is far more common than most people realise. According to the National Family Health Survey (NFHS-5, 2019–21), 57% of Indian women aged 15–49 are anaemic — up from 53% in the previous survey. Iron carries oxygen through your bloodstream via haemoglobin, so when levels fall, every system that depends on oxygen slows down. The result is rarely dramatic. It shows up as tiredness you blame on a busy week, breathlessness on stairs you used to manage, difficulty concentrating, and hair that sheds more than it used to. Because these symptoms build gradually, most people adapt to them rather than notice them. A simple blood test measuring haemoglobin and ferritin confirms whether iron is genuinely the problem — and that test should come before any supplement.

How common is iron deficiency in India?

Anaemia in India is a public health issue rather than an individual one. NFHS-5 recorded anaemia in 57% of women aged 15–49, and prevalence rose between NFHS-4 and NFHS-5 despite national intervention programmes. The Government of India runs Anaemia Mukt Bharat specifically to address this.

Women of reproductive age carry the highest burden because menstruation causes regular iron loss. Pregnancy raises requirements further. Vegetarians face an additional challenge, which we cover below.

What are the symptoms of low iron?

• Persistent fatigue that sleep does not resolve
• Breathlessness during ordinary activity
• Pale skin, inner eyelids or nail beds
• Cold hands and feet
• Brittle nails and increased hair fall
• Difficulty concentrating
• Restless legs at night

None of these is diagnostic on its own. Several have causes unrelated to iron, which is exactly why testing matters.

Who is most at risk?

Menstruating women lose iron monthly. Pregnant women need substantially more. Vegetarians and vegans consume only non-haem iron, which the body absorbs less efficiently than the haem iron in meat. Adolescents in growth spurts, endurance athletes, and frequent blood donors all have raised requirements.

Why do some iron supplements cause stomach upset?

Conventional iron salts such as ferrous sulphate are well known for nausea and constipation. This is the main reason people abandon iron supplementation partway through — and stopping early is why haemoglobin often fails to recover. Gentler forms such as ferrous bisglycinate are chelated to be easier on the digestive tract, which makes consistent daily use realistic.

How can you absorb more iron from the same tablet?

Vitamin C markedly improves non-haem iron absorption. Taking your supplement with citrus, amla or another vitamin C source is one of the simplest ways to get more from the same dose.

Several everyday items work against absorption. Tea and coffee contain polyphenols that bind iron. Calcium competes with iron for uptake, so calcium supplements and dairy are best kept a couple of hours apart from your iron dose. Wholegrain phytates reduce absorption too, though their overall dietary benefits outweigh this.

How much iron do you actually need?

The ICMR-National Institute of Nutrition publishes Recommended Dietary Allowances specifically for Indian bodies and dietary patterns, last revised in 2020. Requirements differ substantially by age, sex and pregnancy status, so the right figure for you is best confirmed with your doctor rather than assumed.

Why you should test before supplementing

Iron is one supplement that should not be taken on assumption. Unlike water-soluble vitamins, excess iron is not simply excreted — it accumulates in tissue and can cause harm over time. People with haemochromatosis, thalassaemia or certain chronic conditions can be actively harmed by unnecessary iron.

A haemoglobin and ferritin panel is inexpensive and widely available. Ferritin matters because it reflects stored iron: you can have normal haemoglobin while stores are already depleted. Test first, supplement second, and retest after about three months to confirm the approach is working.

References

1. Prevalence and determinants of anaemia among women of reproductive age in Aspirational Districts of India: an analysis of NFHS-4 and NFHS-5 data. BMC Public Health. pmc.ncbi.nlm.nih.gov/articles/PMC10860231
2. ICMR-National Institute of Nutrition. Nutrient Requirements for Indians — Recommended Dietary Allowances, 2020. nin.res.in/rdabook/brief_note.pdf
3. Ministry of Health and Family Welfare, Government of India. Anaemia Mukt Bharat. pib.gov.in

A note on medical advice

This article is general information, not a diagnosis or a treatment plan. If you suspect iron deficiency, or you are pregnant, breastfeeding, taking prescription medication or managing a chronic condition, speak to your doctor before starting any iron supplement.