Low Iron Levels: Signs You’re Deficient (and How to Boost Absorption Naturally)
Low iron levels are far more common than most people realise — especially if you’re female and pre-menopausal, vegetarian or vegan, or living with digestive issues.
Iron deficiency often flies under the radar, yet it can have a huge impact on your energy, hormones, gut health and overall wellbeing. Let’s break down why iron matters, the signs you might be low, and how to support absorption naturally through food.
Why iron is so important
Iron is an essential mineral involved in hundreds of processes in the body, but one of its most critical roles is oxygen transport.
Iron is needed to make haemoglobin — a protein inside red blood cells that carries oxygen from your lungs to your tissues and organs. Without enough iron, your body simply can’t deliver oxygen efficiently.
When oxygen delivery drops, fatigue, weakness and breathlessness often follow — because your cells don’t have what they need to function properly.
Low iron levels are commonly linked to iron-deficiency anaemia, where the body doesn’t produce enough healthy red blood cells. But iron’s role doesn’t stop there…
Iron and whole-body health
Iron is also needed to:
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Support gut health and digestion (it plays a role in key digestive enzymes)
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Maintain healthy hormone balance
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Support metabolism and energy production
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Keep immune and cellular function working smoothly
This is why iron deficiency symptoms can be wide-ranging and sometimes confusing.
Common signs of low iron levels
Symptoms vary, but some of the most common include:
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Persistent fatigue or weakness
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Pale skin
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Shortness of breath
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Heart palpitations
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Difficulty exercising
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Hormone imbalances
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Unusual cravings (such as ice or non-food items)
Who is most at risk of iron deficiency?
You may be at higher risk if you:
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Have digestive or absorption issues such as SIBO or gut dysbiosis
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Restrict your diet or avoid animal products
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Experience heavy menstrual bleeding
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Are pregnant
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Follow a vegetarian or vegan diet
Gut health is especially important here — certain less-helpful gut bacteria are known to use up iron, making deficiency more likely if digestion isn’t optimal.
If you’re serious about supporting your gut health, my online course, The Ultimate Gut Health Programme, is the perfect next step. It’s designed to help you calm your digestive system, avoid common triggers, and still enjoy delicious, satisfying meals.
This blog is just the tip of the iceberg — the course goes much deeper, giving you everything you need to truly soothe your gut, feel lighter, and reclaim your digestive comfort.
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Heme vs non-heme iron (this matters!)
Iron comes in two forms:
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Heme iron – found in animal foods (meat, poultry, fish) and very easily absorbed
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Non-heme iron – found in plant foods and much harder for the body to absorb
In fact, iron from animal foods can be up to three times more absorbable than plant-based iron.
How food combining boosts iron absorption
Eating heme-iron foods alongside plant-based sources helps your body absorb non-heme iron more effectively. This simple pairing can make a big difference.
What if you’re vegetarian or vegan?
Good news — nature has your back 🌱
Vitamin C dramatically improves iron absorption.
Plant foods like lentils and pulses are rich in iron, but pairing them with vitamin-C-rich foods such as peppers, broccoli or chilli peppers helps unlock that iron.
Spinach is a great example — it contains both iron and vitamin C.
The big picture
If you’re eating a wide variety of whole, nutrient-dense foods throughout the day, you’re far less likely to develop low iron levels. Balance and diversity really are key.
If you suspect iron deficiency, a simple blood test through your GP can confirm this. Supplementing with iron isn’t something to do blindly — unless you’ve been advised to, it’s best avoided outside of low-dose multivitamin formulas.
If you’re struggling with fatigue, hormone imbalances or gut issues and want to explore whether low iron levels could be part of the picture, you’re very welcome to book a FREE 30-minute chat with me. We’ll look at what’s really going on and where support is needed.
If you would like to speak to me about any aspect of your gut health, then please use this link to book into my diary for a FREE 30 minute chat so I can find out more about what is going on for you. Alternatively please use the ‘Learn More’ link below.
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