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Why is iron important?

by CBHS Corporate Health | May 15, 2019
Iron Importance

So you need to boost those iron levels, fast. Where do you start? First you’ll need to talk to a doctor, then you can start changing your diet.

Iron performs a number of important functions, most notably transporting oxygen in the blood. That’s why a deficiency in iron can cause symptoms like fatigue, decreased memory and decreased aerobic sports performance.

In this article we’re going to outline some quick ways to get iron back into your system, as well as discuss how to increase your iron absorption rate (which is the first step to increasing your levels).


However, before we proceed we must say that you should never self-diagnose iron deficiency. In too high doses, iron can be toxic. Please consult your doctor first if you’re worried about your levels.

How to increase iron absorption in your body

Sadly, iron isn’t magically absorbed into the body. Its absorption rate depends on your diet and the type of iron you’re consuming.

These are some common ways to increase your iron absorption rate:

Add vitamin C to your diet: Vitamin C increases iron absorption, which makes it an ideal partner, especially for non-haem sources. “Pairing vitamin C with your meal gives non-haem iron a boost, upping its absorption,” nutritionist Cynthia Sass advised.

Cut back on tea and coffee: Tannins from tea and coffee interfere with iron absorption and should not be consumed within a few hours (before or after) iron-rich meals. Avoid chocolate too, as some cocoa has the same effect.

Space out iron intake: Sass recommended to space out iron intake, as the body can absorb more when consumed in several small doses instead of a single large one.

Ways to boost your iron levels

Adding the following foods into your regular diet can set you on your way to normalising your iron levels. To find out specifically how much you require each day, please consult your doctor.

There are two types of iron - haem and non-haem. The former is generally found in meat and is more efficiently absorbed into the body. The latter can be found in plant-based products and is absorbed less efficiently.

Haem iron

Upward of 70 per cent of the iron found in meat products (outlined below) is haem iron, making these an effective source. The rest of the iron is non-haem.

We’ve ordered these ingredients from most iron to least, using Nutrition Australia's (NA) guidance:

  • Organ meats (e.g. chicken liver)
  • Red meat (e.g. beef and lamb)
  • Salmon
  • Pork
  • Chicken

Although not included in NA’s chart, oysters are also considered a great source of iron. If we added them to the above list, they would come in second place (based on data from the USDepartment of Agriculture).

Non-haem iron

This type of iron isn’t as efficiently absorbed, but that doesn’t mean you should avoid it. You just won’t absorb as much iron per serving as, say, a beef steak. Vegans, vegetarians and other non-meat-eaters may need to consume more servings of the below to get their levels up, although you should only make this decision after consulting your doctor.

From most iron to least, using guidance from NA:

  • Weetbix and All Bran - cereals like wheat, oats etc. are good non-haem sources
  • Kidney beans
  • Tofu
  • Chickpeas
  • Cooked wholemeal pasta
  • Cashews
  • Spinach
  • Dried apricot
  • Broccoli
  • Cooked brown rice
  • Wholegrain bread

Essentially, fortified cereals, dark-green leafy veg, beans and legumes, and dried fruits are all sources of non-haem iron.

What about supplements?

Iron supplements are available, in various forms (commonly pill, capsule or liquid). Due to their higher dosage and some of the potential side effects, you should only take iron supplements if you have been instructed to do so by a professional and given appropriate guidance.

And those are the basics! Iron levels can typically be brought back up to normal with a change in diet, even for those who avoid meat. You just have to consult a doctor first to ensure you are doing so safely.