The Iron Gap Between Men and Women Starts at the Dinner Table

Imagine this.

At dinner, you and your husband are eating exactly the same meal — perhaps some sardines, chickpeas, vegetables, and rice.

Sounds healthy enough.

But here’s something many women don’t realise: while an adult man generally requires around 9mg of iron per day, a woman may require between 19mg and 29mg daily — more than double, and sometimes more than triple.

As a dietitian, this difference often surprises people. If everyone at the table is eating the same food, shouldn’t everyone be getting what they need?

Not necessarily.


Same meal, different nutritional reality

Let’s take a simple example.

  • 3 pieces of sardine (155g) provide approximately 4.2mg of iron
  • ½ cup boiled chickpeas provide approximately 4mg of iron

Together, that’s about 8mg of iron.

For many men, that’s already close to their daily requirement.

For many women, however, it may only provide around one-third of what they need for the entire day.

The difference isn’t because women are eating worse than men. The reality is that women are biologically designed to require more iron.

Unlike men, women lose iron through menstruation every month. Women are also biologically designed to support pregnancy, which requires substantial iron reserves for the growing baby, placenta, and increased maternal blood volume.

As a result, women spend a large part of their lives with significantly higher iron requirements than men.

 

The hidden stage many women never notice

Most people are familiar with haemoglobin, but fewer know about ferritin.

Iron is needed to produce haemoglobin, the protein in red blood cells responsible for carrying oxygen around the body. When haemoglobin becomes too low, less oxygen reaches your tissues and organs, which can leave you feeling tired, weak, or short of breath.

However, iron deficiency does not happen overnight.

When dietary iron isn’t enough, the body first draws from its iron storage, known as ferritin, to keep haemoglobin levels stable.

Think of ferritin as your body’s iron reserve.

This means ferritin levels can become low long before iron deficiency anaemia develops. During this stage, some women may already experience symptoms such as fatigue, reduced stamina, poor concentration, or hair fall, even though their haemoglobin levels still appear normal.

 

Why women over 35 should pay attention

For many women, iron stores do not suddenly disappear overnight.

The decline often happens gradually over years due to monthly iron losses, busy lifestyles, meal skipping, dieting, reduced food intake, or simply not meeting increased iron requirements consistently.

Many women in their 30s, 40s, and early 50s are balancing careers, family responsibilities, and caregiving roles. It’s easy to assume that feeling tired, less energetic, or mentally drained is simply part of a busy life.

Sometimes it is.

But sometimes, low iron stores may also be part of the picture.

 

What does an iron-conscious meal look like?

Many women are surprised by how much iron is needed to meet daily requirements.

For example:

  • 10 medium-sized clams provide approximately 11mg of iron
  • 3 pieces sardine (155g) provide approximately 4.2mg of iron
  • ½ cup boiled chickpeas provide approximately 4mg of iron
  • 1 block tofu (240g) provides approximately 5.3mg of iron

A practical iron-conscious meal could include clams, sardines, chickpeas, and a vitamin C-rich fruit such as an orange after the meal.

This combination can provide close to 20mg of iron, helping women move much closer towards meeting their daily iron requirements.

 

Know Your Iron Stores

Low iron stores can develop quietly over time.

If you’re a woman aged 35 years and above and frequently experience fatigue, hair fall, or reduced energy levels, consider discussing ferritin testing with a healthcare professional.

Sometimes, understanding your iron status starts with understanding your ferritin level.


Reference List:

  1. Ministry of Health Malaysia. (2017). Recommended nutrient intakes for Malaysia. Putrajaya, Malaysia: Ministry of Health Malaysia.
  2. Ministry of Health Malaysia. Malaysia Food Composition Database (MyFCD). https://myfcd.moh.gov.my/ 
  3. Health Promotion Board Singapore. Singapore Food Composition Database (SGFoodID). https://www.hpb.gov.sg/healthy-living/food-and-beverage/sgfoodid/
  4. World Health Organization. (2024). Anaemia. https://www.who.int/news-room/fact-sheets/detail/anaemia