Iron Deficiency Support
When your iron remains low or keeps falling again despite treatment
IRON DEFICIENCY NATUROPATH · MAROOCHYDORE, SUNSHINE COAST & ONLINE
Low iron is one of the most common issues I see in women in my clinic. It’s not unusual for women to have taken iron supplements for years and still have their levels barely budge, or to have an infusion only for them to fall again.
When this happens, it needs to be investigated. Persistent or recurring low iron is often more complicated than just needing more iron. I want to understand how your levels have changed over time and how they’ve responded to treatment.
I start by reviewing your current and previous iron studies. If the cause remains unclear or your levels haven’t responded as expected, further testing might be needed.
Iron Deficiency Can Occur Without Anaemia
Iron deficiency can develop before haemoglobin falls below the laboratory reference range. This means you can have depleted iron stores even if you’ve been told that you’re not anaemic.
Iron-deficiency anaemia occurs when there is no longer enough available iron to adequately support red blood cell production and haemoglobin falls. Symptoms can become more noticeable at this stage, but some women experience symptoms while their haemoglobin is still normal.
Low iron can contribute to fatigue, reduced exercise tolerance, headaches, restless legs, hair shedding or difficulty concentrating. These symptoms can also have other causes, so blood testing is needed to confirm whether iron deficiency is present.
Understanding Your Iron Results
Ferritin is one of the most useful markers of stored iron, but It’s important to interpret it with your other iron markers. I review it alongside your full blood count, transferrin saturation and previous results. Other pathology can also be relevant depending on your presentation.
A genuinely low ferritin strongly supports depleted iron stores, even when haemoglobin remains normal. However, ferritin can rise during inflammation, infection or some chronic health conditions. In these cases, a result within the reference range may not give the full picture.
Serum iron can change depending on recent food intake, supplements, illness and the time of day. It shouldn’t be used on its own to diagnose or rule out iron deficiency.
Previous blood results are particularly useful. They show whether your levels responded to treatment and whether iron stores were adequately replenished.
Why Does Iron Become Low?
Iron deficiency develops when the amount of iron being lost or used is greater than the amount being absorbed. More than one factor can be contributing.
Ongoing blood loss
Heavy periods are a common cause of iron deficiency in women. Frequent bleeding, long periods or bleeding between periods can also result in significant iron loss over time.
Other sources may include gastrointestinal bleeding, regular blood donation, recent surgery or blood loss during childbirth.
Increased requirements
Iron requirements increase during pregnancy and recovery after childbirth.
Adolescence and intensive endurance training can also increase requirements.
Inadequate intake
Iron intake migh be low when someone eats very few iron-rich foods, follows a restricted diet or has a reduced appetite. Digestive symptoms can also lead to progressively removing foods and eating less overall.
Improving dietary iron is important, but food alone might not be enough to correct an established deficiency.
Reduced absorption or altered iron availability
Coeliac disease, inflammatory bowel disease, gastrointestinal surgery and some medications can affect iron absorption. Inflammation can also change how iron is regulated and made available within the body.
Persistent or unexplained iron-deficiency anaemia may require medical investigation for gastrointestinal blood loss, coeliac disease or Helicobacter pylori.
Digestive symptoms alone don’t prove that iron is being poorly absorbed.
Heavy Periods and Recurring Low Iron
For many women with recurring iron deficiency, the issue isn’t usually the wrong supplement. They might be losing iron each month faster than treatment can replace it.
I want to know about your whole bleeding pattern, not only whether you consider your periods heavy. Long periods, short cycles or bleeding between periods can all contribute to iron loss. Bleeding through clothing or bedding, passing large clots, needing to change period products very frequently or having to use two forms of protection can also indicate substantial blood loss.
Fibroids, adenomyosis and changing bleeding patterns during perimenopause might be contributing. Endometriosis can occur alongside painful or heavy periods, but it shouldn’t automatically be assumed to explain the bleeding.
An iron infusion can replace a larger amount of iron quickly, but it can’t prevent further loss. If heavy or frequent bleeding continues, levels can fall again. Treatment needs to address the iron deficiency while the cause of the bleeding is investigated.
Understanding Your Response to Iron Treatment
Being told that your iron is “still low” doesn’t explain what happened. Iron that barely changes during treatment raises different questions from iron that improves and then falls again.
1. Your Results Barely Change
First, I want to know what treatment was actually used. The type of iron, elemental dose, schedule and duration. I also want to know whether side effects made it difficult to take consistently.
If treatment has been appropriate and the expected improvement still hasn’t occurred, ongoing blood loss, impaired absorption or inflammation need to be considered.
2. Haemoglobin Improves but Ferritin Remains Low
When iron-deficiency anaemia is present, haemoglobin may improve before iron stores have been adequately replenished. The anaemia can appear corrected while ferritin remains low.
This doesn’t mean iron should continue indefinitely. Haemoglobin and ferritin give us different information and both need to be considered when deciding whether treatment has worked.
3. Your Levels Improve and Then Fall Again
An improvement followed by another decline shows that iron can be replaced, but something is still be drawing down your stores.
Ongoing menstrual bleeding or another source of blood loss could be contributing. It’s also possible that treatment improved haemoglobin but stopped before iron stores were adequately replenished.
4. Your Results Improve but You Still Feel Exhausted
If your haemoglobin and ferritin improve but you don’t feel better, iron deficiency might not have been the only cause of your symptoms.
Continuing to increase iron is unlikely to resolve fatigue that has another explanation. Your symptoms and wider pathology need to be reviewed again.
Understanding Elemental Iron
Iron supplements contain different forms of iron, and the milligrams listed for the full compound isn’t alway the amount of iron the product provides. The figure I’m interested in is the elemental iron.
Two products with similar-looking doses can provide very different amounts of elemental iron. A multivitamin, prenatal supplement or low-dose “gentle iron” might support daily intake without providing enough to correct an established deficiency.
This is why I want to know the exact product you’ve taken and how often and long you took it for. A higher-dose product isn’t always better. The dose needs to be adequate, tolerable and followed by repeat blood testing to confirm that it’s working.
Iron Dosing and Absorption
After a therapeutic dose of oral iron, the hormone hepcidin can rise temporarily and reduce how much iron is absorbed from a subsequent dose. Increasing the amount or taking iron more frequently doesn’t always produce a proportional improvement. It can instead increase nausea, constipation or abdominal discomfort, and in some cases reduce further absorption.
Some women respond well to alternate-day dosing and find it easier to tolerate. However, alternate-day dosing isn’t always better for everyone. The schedule needs to account for the severity of the deficiency, the actual iron dose, whether anaemia is present and how quickly levels need to improve.
Iron is generally absorbed better away from food, but taking it on an empty stomach can cause digestive side effects. Taking it with food can improve tolerance even though absorption might be reduced.
Tea, coffee, calcium and antacids can interfere with absorption when taken close to iron. Some medications also need to be separated from the dose. Medication timing should be checked with your prescribing practitioner or pharmacist rather than changed independently.
Can Food Correct Iron Deficiency?
Haem iron from animal foods is generally absorbed more readily than non-haem iron from plant foods. Vitamin C-rich foods can improve the absorption of non-haem iron, while tea, coffee and calcium can reduce absorption when consumed at the same time.
A well-planned vegetarian or vegan diet can provide iron, but an established deficiency may require more than dietary changes. Food intake remains important, but it might not replace iron quickly enough when stores are significantly depleted or blood loss is continuing.
Vitamin B12, folate and adequate protein also support healthy blood production. I don’t automatically recommend a collection of “blood-building” supplements. I look at your diet and pathology to decide whether another deficiency needs to be investigated.
Taking iron supplements? Read How to Take Iron Supplements Effectively →
Iron Deficiency and Digestive Symptoms
I often see women with low iron who also experience bloating, reflux, constipation or diarrhoea. Digestive symptoms can lead to eating less or avoiding iron-rich foods. Iron supplements can also worsen nausea or constipation, making them hard to take.
When iron levels barely improve despite an appropriate dose, the answer usually isn't more iron. I want to investigate whether something in the digestive system may be affecting absorption.
Helicobacter pylori infection can contribute to iron deficiency. SIBO can also reduce nutrient absorption. I also consider coeliac disease and whether inflammation or ongoing digestive illness could be affecting iron availability.
I decide what needs investigating based on your iron results, treatment response and digestive symptoms. Where appropriate, I can arrange SIBO breath testing, stool testing, and identify further pathology that could be useful to request through your GP.
If coeliac disease could be relevant, testing needs to happen before removing gluten because a gluten-free diet can make the results invalid.
Why did my iron fall after an infusion?
An iron infusion bypasses the digestive system and replaces a larger amount of iron quicker than oral supplements. But it doesn’t address why the iron became low.
If heavy periods, gastrointestinal blood loss or increased requirements continue, ferritin may fall again. Levels can also decline if stores weren’t fully replenished in the first place.
I want to look at how much your haemoglobin and ferritin improved and what was happening when they began to fall. This helps identify if iron is still being lost or whether another issue needs investigation.
Some women may need further infusions, but recurring low iron shouldn’t be managed by repeatedly replacing it without also looking at why it keeps happening.
How I Assess Recurring Low Iron
I review your current and previous blood results together to see how your iron has changed and whether it responded as expected.
I also look at the exact product and elemental dose you’ve used alongside your menstrual history, digestive symptoms and food intake. From there, I can decide what might need to change, whether further testing would be useful and when your blood results should be repeated.
If I think further investigation is needed, I’ll explain what I recommend and why. I can also provide your GP with a clinical summary or letter to help you advocate for the care you need.
You shouldn’t be left taking iron indefinitely without knowing whether it’s working or why it’s still needed.
Frequently asked questions
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No. You can book if you’ve been told your iron is low, your levels keep falling or you’re struggling to tolerate your current supplement.
Previous blood results are useful, even if they aren’t recent, because they show how your iron has changed over time. Please send through any results you have and the name and dose of the iron product you’ve been taking.
If further testing would be helpful, I can explain what I recommend and what to discuss with your GP.
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Yes.
Iron stores can become depleted before haemoglobin falls below the laboratory reference range. This is commonly called iron deficiency without anaemia.
Symptoms and pathology still need to be interpreted together because fatigue, poor concentration and reduced exercise tolerance are not specific to iron deficiency.
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Iron should not be taken just because you feel tired or suspect your levels are low.
Testing helps confirm whether iron deficiency is present and whether supplementation is appropriate.
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I can review your existing pathology and help identify which results may be useful to discuss with your GP.
Medical investigation or treatment is recommended where the severity, symptoms or possible cause of the deficiency requires it.
If you don’t want to go through your GP for iron testing I can organise it privately.
Book an Initial Consultation
If your iron levels aren’t improving or keep falling after treatment, I can review your current and previous results alongside what you’ve already tried.
Your initial consultation gives us time to work through what may be contributing and decide what needs attention.
Consultations are available in Maroochydore and Forest Glen, as well as online Australia-wide.