If you have been dragging yourself through the day for weeks and coffee has stopped helping, you are not imagining it. Persistent fatigue is one of the most common reasons patients book in with a GP at Camberwell Health, and low iron is one of the most common and most fixable causes we find.
This article walks through what iron deficiency actually feels like, why it happens, and when an iron infusion Camberwell patients ask about becomes a genuine option rather than a first step. As always, this is general information. Your own diagnosis and treatment plan need a proper conversation with your doctor.
Why Autumn and Winter Bring More Tired Patients Through the Door
Every year around this time, we see a noticeable jump in patients coming in and saying some version of “I’m just so tired, and I don’t know why.” Some of it is simply less sunlight and shorter days. But a genuine chunk of it is iron deficiency that has been building quietly for months, often since the warmer months when heavier periods, endurance exercise or dietary changes started chipping away at iron stores.
Fatigue caused by low iron does not always announce itself loudly. It tends to creep in, which is exactly why it gets waved off as “just being busy” or “just winter” for far too long.
What Iron Deficiency Actually Feels Like
Iron is essential for making haemoglobin, the part of your red blood cells that carries oxygen around your body. When iron runs low, your tissues and muscles are effectively running on less fuel, even if you are eating and sleeping normally.
Common iron deficiency symptoms include:
- Feeling tired all the time, even after a full night’s sleep
- Shortness of breath doing things that used to feel easy
- Pale skin, or pale inside the lower eyelids
- Headaches or dizziness
- Restless legs, especially at night
- Brittle nails or unusual hair loss
- Difficulty concentrating, sometimes described as “brain fog”
- Cravings for ice, or in some cases non-food items
None of these symptoms are exclusive to iron deficiency. That is precisely why guessing at home rarely helps and a simple blood test tells you far more than symptom-spotting ever will.
Who Is Most at Risk
Some groups are more likely to run low on iron, including:
- Women with heavy or prolonged periods
- Pregnant women, due to increased blood volume and the baby’s needs
- Vegetarians and vegans, since plant-based iron is absorbed less efficiently than iron from animal sources
- Endurance athletes and runners, partly through a process called exercise-induced iron loss
- People with coeliac disease or other conditions affecting gut absorption
- People with chronic gastrointestinal blood loss, which always needs proper investigation rather than assumption
- Older adults, whose diet and absorption can both decline
If you fit into one or more of these groups and you have been feeling worn down, it is worth mentioning to your GP even if you assume your tiredness has an obvious explanation.
How Low Iron Is Actually Diagnosed
This part matters because it is where a lot of online advice goes wrong. Iron deficiency is not diagnosed by symptoms alone. It is confirmed with a blood test, usually checking:
- Ferritin, which reflects your body’s stored iron
- Haemoglobin, to check whether deficiency has progressed to anaemia
- Sometimes additional markers depending on your history and other results
Camberwell Health has on-site pathology, so if your doctor recommends bloods, you can usually have them done in the same visit rather than adding another errand to your week.
Treating Low Iron: Where Infusions Fit In
This is the part patients are most curious about, and the honest answer is that iron infusions are not usually the first thing tried. The typical approach looks like this:
Step 1: Identify and, where possible, address the cause. If heavy periods, diet or a gut condition are driving the deficiency, that underlying issue needs attention too, not just the iron level itself.
Step 2: Oral iron, in many cases. Iron tablets or liquid supplements are the standard first-line treatment for most people with mild to moderate deficiency. They take longer to work and can cause side effects like constipation or an upset stomach, but they are effective for a large proportion of patients.
Step 3: Iron infusion, when appropriate. An iron infusion delivers iron directly into the bloodstream through a small IV line, bypassing the gut entirely. This is generally considered when:
- Oral iron has not been tolerated or has not worked
- Iron levels are significantly low, or anaemia is more severe
- There is a clinical reason iron needs to be corrected more quickly, such as before surgery or in some pregnancy situations
- Ongoing gut absorption issues make oral iron unreliable
Whether an infusion is the right next step depends on your blood results, your medical history and your doctor’s clinical judgement. It is not something you can decide from a symptom checklist, and it is not something we would recommend without bloods first.
What an Iron Infusion Involves
If your GP does recommend an iron infusion, the process itself is straightforward. It typically involves sitting for the infusion while iron is administered intravenously, with monitoring during and after the appointment. Most people tolerate it well, though your doctor will talk you through possible side effects and what to watch for afterwards based on your individual situation.
This is exactly the kind of detail that should come from your own doctor once your results are in front of them, rather than from a general article.
Why This Is Worth Sorting Out Properly
Ignoring ongoing fatigue does not just mean feeling flat. Untreated iron deficiency can affect concentration, mood, exercise capacity and, if it progresses to anaemia, puts extra strain on your heart to compensate. Getting it diagnosed properly the first time saves you the cycle of feeling unwell, assuming it will pass, and coming back around to the same tiredness a few months later.
Booking In at Camberwell Health
Camberwell Health is a Quality Practice Accredited bulk billing GP clinic at 676 Burke Road, Camberwell. If ongoing tiredness, unusual shortness of breath or any of the symptoms above sound familiar, book a standard consultation so we can start with a proper history and bloods.
You can book online any time via HotDoc, or call us on (03) 9882 0055. We bulk bill eligible Medicare patients for standard consultations.
This article is general information and does not replace personalised medical advice. Please speak with your doctor about your own symptoms, test results and treatment options.
Author bio: Dr Tamjida Siddique is a general practitioner at Camberwell Health (MBBS FRACGP). View her doctor profile for more information or to book an appointment.