Nutritional Screening in Singapore

Iron deficiency is common and is the leading cause of iron deficiency anaemia. Anaemia means low haemoglobin, which means red blood cells cannot deliver enough oxygen to the rest of the body - producing fatigue, weakness, pallor, headaches, chest pain, brittle nails and hair shedding.

The good news is that iron deficiency is straightforward to identify clinically and on blood tests, and equally straightforward to treat. Options range from oral iron replacement to intravenous iron infusions - our doctors match the regimen to how severe the deficiency is and how quickly you want to correct it.

Many clinics will simply top up the iron. At our Orchard clinic we work in the other order - the deficiency is usually a symptom, and the underlying cause matters. It might be gastrointestinal blood loss, an absorption issue, a diet gap, or a coexisting deficiency in vitamin C, folate or vitamin B12. Addressing the driver is what stops the deficiency coming back six months later.

B12 deficiency is particularly common across Asia, and the reason is dietary: B12 is almost entirely absent from plant foods and concentrated in animal sources, especially organ meats. Diets lower in animal protein - common across Singapore - naturally supply less of it.

On top of dietary intake, absorption is the other big driver. Atrophic gastritis, pernicious anaemia, inflammatory bowel disease, chronic alcohol use, autoimmune conditions and several long-term medications (PPIs, metformin) can all impair how much B12 your body actually takes up from food.

Symptoms are broader than most patients expect: chronic fatigue and weakness, pallor, a smooth tongue, GI upset, nerve issues (numbness, tingling) and cognitive or mood changes including poor memory and low mood. Our doctors identify B12 deficiency through a straightforward blood test plus clinical exam, and treat it with dietary changes, oral supplementation or - where absorption is the issue - intramuscular B12 injections.

Vitamin D deficiency is genuinely widespread in Singapore, which surprises most patients given how sunny it is. The reason is behavioural rather than climatic - most working adults spend the day indoors under air-conditioning and deliberately avoid direct sun exposure, so the skin makes very little vitamin D despite the equatorial UV.

Current research places vitamin D well beyond just bone health: it supports muscle function, hormone production, immune regulation and metabolic health, and low levels are consistently associated with higher risk of diabetes, cardiovascular disease, chronic inflammation and certain cancers.

Modest morning sun exposure helps but is often not enough on its own. Where a blood test shows a real deficit, our doctors prescribe vitamin D at the right loading dose - not a guessed shelf supplement - because excessive vitamin D over long periods carries its own risks. Testing first, then dosing, is the safe way to correct it.