Micronutrient Deficiencies: Are You Getting Enough of the Vitamins and Minerals You Need?

In short: Micronutrient deficiencies are surprisingly common, even in Australia. Many people experience fatigue, low immunity, brain fog, or poor skin and don’t realise the cause may be missing vitamins. Micronutrient Deficiencies: Are You Getting Enough of the Vitamins and Minerals You Need? Micronutrient deficiencies are surprisingly common, even in Australia. Many people experience fatigue, low immunity, brain fog, or poor skin and don’t realise the cause may be missing vitamins or minerals. This article explains what micronutrients are, which deficiencies are most common in Australia, how they affect your health, and what you can do to prevent or address them. What Are Micronutrients? Micronutrients are essential vitamins and minerals that the body needs in small amounts. They don’t provide energy like carbohydrates, fats or protein—but they’re vital for everything from brain function to immune health and strong bones. You only need small amounts, but missing out over time can cause serious health problems. Why Do Deficiencies Occur? Micronutrient deficiencies can happen even when people eat regularly. Some of the most common reasons include: Diets low in fresh fruit, vegetables, and whole foods Avoiding certain food groups (e.g. vegan, keto, low-carb) Health conditions that affect nutrient absorption (such as coeliac disease or Crohn’s) Certain medications, like antacids or metformin Stress and poor gut health Reduced appetite or food variety in older adults Common Micronutrient Deficiencies in Australia 1. Iron Iron helps carry oxygen in the blood. Low levels can cause tiredness, shortness of breath, pale skin, and dizziness. Iron deficiency is especially common among women, vegetarians, and teenagers. 2. Vitamin D Vitamin D supports bones, immunity, and mood. A link exists between Vitamin D deficiency and heart health. Even though Australia gets plenty of sunlight, many people don’t get enough due to sunscreen use, indoor lifestyles, or darker skin. 3. Vitamin B12 Vitamin B12 is needed for healthy nerves and red blood cells. A deficiency can cause fatigue, brain fog, and nerve symptoms. Older adults and vegans are most at risk. 4. Folate (Vitamin B9) Folate is essential for cell growth and repair. It’s particularly important during pregnancy to prevent birth defects. Low levels can also lead to anaemia. 5. Iodine Iodine supports thyroid function. Too little iodine can lead to weight gain, sluggishness, and an enlarged thyroid (goitre). Australians are advised to use iodised salt, but not everyone does. 6. Zinc Zinc is needed for immune health, wound healing, and hormone production. Signs of deficiency include poor healing, frequent colds, and changes in taste or smell. 7. Magnesium Magnesium supports nerves, muscles, energy production, and sleep. Low levels may cause cramps, headaches, mood issues, or poor sleep quality. Signs You May Be Lacking Micronutrients Many signs of deficiency are vague or easily dismissed: Constant tiredness or low energy Hair thinning or brittle nails Low mood or poor concentration Muscle cramps Skin problems Getting sick often Tingling or numbness in the hands and feet If you notice these symptoms, it’s worth speaking to your GP or a dietitian. How to Fix or Prevent Deficiencies 1. Eat a Balanced Diet Aim to include a variety of vegetables, fruits, whole grains, legumes, lean protein, dairy or dairy alternatives, nuts and seeds. 2. Limit Highly Processed Foods Fast food, sugary snacks, and soft drinks are often low in nutrients. Try to prepare more meals at home using whole ingredients. 3. Check Your Levels A simple blood test can detect many common deficiencies. It’s especially useful if you follow a restrictive diet or have ongoing health issues. 4. Use Supplements Wisely Supplements can help if you’re genuinely deficient or can’t meet your needs through food. Speak to a healthcare provider before starting anything new. 5. Support Your Gut Your gut plays a big role in how well nutrients are absorbed. Include fibre-rich foods, fermented products like yoghurt or kefir, and limit alcohol and sugar. Final Thoughts Micronutrient deficiencies often go unnoticed until symptoms become more serious. Thankfully, most are easy to identify and treat with simple changes to your diet and lifestyle. If you’re not feeling your best and can’t work out why, checking your micronutrient status could be a smart step. References Australian Bureau of Statistics – Australian Health Survey: Nutrition First Results – Foods and Nutrients National Health and Medical Research Council (NHMRC) Better Health Channel (Vic Health) WHO – Micronutrient Deficiencies Overview Disclaimer: This information is general in nature and does not replace professional medical advice. If you have symptoms or concerns, please see your doctor.