{"id":302,"date":"2026-07-08T04:58:04","date_gmt":"2026-07-08T04:58:04","guid":{"rendered":"https:\/\/p84.projects.webhubglobal.com\/mindnourish\/?p=302"},"modified":"2026-07-08T05:31:19","modified_gmt":"2026-07-08T05:31:19","slug":"always-tired-why-low-iron-might-be-the-reason","status":"publish","type":"post","link":"https:\/\/p84.projects.webhubglobal.com\/mindnourish\/always-tired-why-low-iron-might-be-the-reason\/","title":{"rendered":"Always Tired? Why Low Iron Might Be the Reason"},"content":{"rendered":"

Feeling constantly tired and low on energy can quietly take over your daily life and wellbeing. Many factors contribute to fatigue, but one of the most overlooked, particularly among women, vegetarians, athletes, and busy professionals, is low iron.<\/span><\/p>\n

Iron is a mineral found in every cell of the body and is essential for the production of red blood cells and the production of energy. In this post, we’ll look at the link between iron deficiency and fatigue, why testing matters, and practical ways to support your iron levels through food and lifestyle.<\/span><\/p>\n

Understanding Iron and Its Role in the Body<\/b><\/h3>\n

Iron is a key component of haemoglobin, the protein in red blood cells that carries oxygen to your tissues so they can produce ATP (adenosine triphosphate), the body’s energy currency. It acts as a vital cofactor in the electron transport chain inside the mitochondria, where most of our energy is generated.<\/span><\/p>\n

Without enough iron, these processes become less efficient, reducing energy production and potentially leading to fatigue, poor concentration, reduced exercise tolerance, and hair loss. Iron also plays a role in growth, immune function, wound healing, and hormone synthesis.<\/span><\/p>\n

Causes of Iron Deficiency<\/b><\/h3>\n

Iron deficiency, with or without anemia, remains one of the most common nutritional deficiencies worldwide, including in developed countries. It is particularly prevalent among infants and young children, women of reproductive age, and pregnant women.<\/span><\/p>\n

Recent national data on iron deficiency in Singaporean women is limited. However, older population studies found iron deficiency in approximately 20% of premenopausal women, while screening surveys have suggested rates as high as 50%. A 2015 Sata CommHealth screening of approximately 600 healthy women in Singapore found that nearly half had low iron stores. Iron deficiency is particularly common during pregnancy, with one local study reporting prevalence rates ranging from 37% to 74%, depending on the trimester and diagnostic criteria used. More recently, the 2025 Global Anaemia Action Alliance roadmap estimated that 18.4% of women of reproductive age in Singapore are anaemic. It is important to note that iron deficiency and anaemia are not the same. While iron deficiency is the leading cause of anaemia, anaemia can also result from other conditions, meaning the true prevalence of iron deficiency is likely to be higher than the prevalence of anaemia alone.<\/span><\/p>\n

Common contributors to low iron include:<\/span><\/p>\n

    \n
  • Inadequate dietary intake<\/span><\/li>\n
  • Increased needs (pregnancy, growth spurts)<\/span><\/li>\n
  • Blood loss (heavy periods, fibroids, surgery, injury)<\/span><\/li>\n
  • Conditions affecting absorption (coeliac disease, Crohn’s disease, H. pylori)<\/span><\/li>\n
  • Obesity and chronic inflammation<\/span><\/li>\n
  • Intense athletic training<\/span><\/li>\n
  • Frequent NSAID use (e.g. ibuprofen, aspirin)<\/span><\/li>\n
  • Frequent blood donation<\/span><\/li>\n<\/ul>\n

    Symptoms to Watch For<\/b><\/h3>\n

    Iron deficiency can show up in many ways, and the symptoms are easy to attribute to stress, busy schedules, or poor sleep. Common signs include persistent tiredness, weakness, dizziness, pale skin, hair shedding, brittle nails, breathlessness, headaches, cold hands and feet, and difficulty concentrating.<\/span><\/p>\n

    These symptoms can affect both physical and mental performance, making everyday life feel harder than it should. If they sound familiar, it’s worth investigating before reaching for a supplement.<\/span><\/p>\n

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    Diagnosing Iron Deficiency<\/b><\/h3>\n

    If you suspect low iron, the most useful next step is a blood test. This is especially important if you have any of the risk factors above or follow a vegetarian or vegan diet.<\/span><\/p>\n

    A thorough iron panel typically includes:<\/span><\/p>\n

      \n
    • Serum iron<\/b> \u2013 the amount of iron in your blood<\/span><\/li>\n
    • Transferrin \/ TIBC<\/b> \u2013 how well iron is being transported<\/span><\/li>\n
    • Ferritin<\/b> \u2013 your iron stores (the most clinically useful single marker)<\/span><\/li>\n<\/ul>\n

      I always recommend ensuring ferritin is included, as iron stores are often depleted long before haemoglobin levels begin to fall. It’s also worth checking vitamin B12 and folate, as both are essential for healthy red blood cell production. While iron deficiency causes microcytic anaemia, deficiencies in vitamin B12 or folate can cause macrocytic anaemia, so assessing all three nutrients provides a more complete picture when investigating fatigue or suspected anaemia.<\/span><\/p>\n

      A quick clarification: anaemia is defined by haemoglobin, not ferritin. Low ferritin signals iron deficiency, which can occur well before anaemia develops. Ferritin levels of \u226430 \u03bcg\/L are generally considered insufficient, while \u226550 \u03bcg\/L is associated with optimal energy. Research suggests that women with ferritin below 50 \u03bcg\/L can experience fatigue, with symptoms most pronounced under 30 \u03bcg\/L.<\/span><\/p>\n

      Preventing and Managing Low Iron<\/b><\/h3>\n

      Dietary iron comes in two forms: <\/span>haem iron<\/b> from animal foods, and <\/span>non-haem iron<\/b> from both plants and animals. Haem iron is more bioavailable, with absorption rates of around <\/span>15\u201335%<\/b>, while non-haem iron absorption ranges from <\/span>2\u201320%<\/b> depending on what you eat alongside it.<\/span><\/p>\n

      The good news: non-haem absorption is highly responsive to how you pair, prepare, and time your meals. Vegetarians and vegans can absolutely meet their iron needs with a thoughtful approach. Your body also self-regulates, increasing absorption when stores are low and reducing it when stores are high.<\/span><\/p>\n

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      What to Eat<\/b><\/h3>\n

      Build meals around iron-rich foods. Some standout options:<\/span><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
      Food<\/b><\/td>\nPortion<\/b><\/td>\nIron (mg)<\/b><\/td>\n<\/tr>\n
      Canned clams<\/span><\/td>\n85 g<\/span><\/td>\n23.8<\/span><\/td>\n<\/tr>\n
      Oysters<\/span><\/td>\n85 g<\/span><\/td>\n13.2<\/span><\/td>\n<\/tr>\n
      Chicken liver<\/span><\/td>\n85 g<\/span><\/td>\n10.8<\/span><\/td>\n<\/tr>\n
      Tofu (firm)<\/span><\/td>\n100 g<\/span><\/td>\n8.0<\/span><\/td>\n<\/tr>\n
      White beans<\/span><\/td>\n100 g<\/span><\/td>\n5.8<\/span><\/td>\n<\/tr>\n
      Beef liver<\/span><\/td>\n85 g<\/span><\/td>\n5.2<\/span><\/td>\n<\/tr>\n
      Cream of wheat<\/span><\/td>\n64 g<\/span><\/td>\n5.2<\/span><\/td>\n<\/tr>\n
      Soybeans<\/span><\/td>\n64 g<\/span><\/td>\n4.4<\/span><\/td>\n<\/tr>\n
      Pumpkin seeds<\/span><\/td>\n28 g<\/span><\/td>\n4.2<\/span><\/td>\n<\/tr>\n
      Lentils<\/span><\/td>\n64 g<\/span><\/td>\n3.5<\/span><\/td>\n<\/tr>\n
      Spinach<\/span><\/td>\n64 g cooked<\/span><\/td>\n3.0<\/span><\/td>\n<\/tr>\n
      Lamb<\/span><\/td>\n85 g<\/span><\/td>\n3.0<\/span><\/td>\n<\/tr>\n
      Quinoa<\/span><\/td>\n125 g<\/span><\/td>\n2.8<\/span><\/td>\n<\/tr>\n
      Pork<\/span><\/td>\n85 g<\/span><\/td>\n2.7<\/span><\/td>\n<\/tr>\n
      Soy milk<\/span><\/td>\n300 ml<\/span><\/td>\n2.7<\/span><\/td>\n<\/tr>\n
      Shrimp<\/span><\/td>\n85 g<\/span><\/td>\n2.6<\/span><\/td>\n<\/tr>\n
      Chickpeas<\/span><\/td>\n100 g<\/span><\/td>\n2.4<\/span><\/td>\n<\/tr>\n
      Beef (ground)<\/span><\/td>\n85 g<\/span><\/td>\n2.2<\/span><\/td>\n<\/tr>\n
      Almonds<\/span><\/td>\n32 g<\/span><\/td>\n1.3<\/span><\/td>\n<\/tr>\n
      Salmon<\/span><\/td>\n100 g<\/span><\/td>\n1.3<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      Source: Firdose & Firdose (2021), Dietary Iron, IntechOpen.<\/span><\/i><\/p>\n

      What to Pair With Iron<\/b><\/h3>\n

      Boost non-haem absorption by combining iron-rich foods with:<\/span><\/p>\n