Can low iron cause fatigue in perimenopause?

Low iron can be one reason some people feel tired at any age. Iron contributes to normal formation of red blood cells and haemoglobin. If you think your iron is low, or your periods are heavy, ask a GP or pharmacist about next steps before using a supplement.

• Iron contributes to normal formation of red blood cells and haemoglobin.
• Fatigue has many causes in midlife. Do not self-prescribe high-dose iron.
• Food supplements are not medicines. If you have symptoms or a health condition, talk to your GP or pharmacist.

The short answer

It can be one reason for tiredness at any age. This page stays within UK claim rules. It does not say a supplement acts on fatigue.

What iron does

Iron contributes to normal formation of red blood cells and haemoglobin.

Why this comes up in midlife

Periods can change in the 40s and 50s. Some women notice heavier bleeding. That can lead you to think about iron from food.

Food first

You can get iron from food. Examples include:

• Red meat, poultry and fish
• Beans, lentils and tofu
• Fortified breakfast cereals
• Leafy greens, nuts and seeds

Aim for regular iron-containing foods across the week.

Thinking about supplements

If your diet has a clear gap, an iron supplement may be considered. Ask a GP or pharmacist before starting one. Food supplements are not medicines. If you have symptoms or a health condition, talk to your GP or pharmacist.

What the research has looked at

A 2024 systematic review examined iron in midlife or menopausal women (one systematic review) [1].

Where this leaves you

Tiredness has many causes. Iron’s role is specific and limited. If you are concerned about low iron or heavy bleeding, seek advice before buying a supplement.

Published by: Suggestic Inc, herstack.co.uk. The HerStack editors. 2026-10-27. This page has not been reviewed by a clinician.