What is iron deficiency anaemia and how is it treated?

Iron deficiency leads to low haemoglobin, so red blood cells can't carry enough oxygen - causing fatigue, weakness, pale skin, headaches, brittle nails and hair shedding. It's identified through a simple blood test and treated with oral or IV iron. At Hisential we look for the underlying cause (absorption issues, GI bleeding, heavy menstrual loss) so the deficiency doesn't return.

Why is vitamin B12 deficiency common in Asia?

Vitamin B12 is found almost exclusively in animal-based foods (especially organ meat) and is largely absent from plant foods, so Asian diets often supply less B12. Conditions like atrophic gastritis, pernicious anaemia, IBD, alcohol misuse and some medications also impair absorption. Treatment ranges from diet changes to oral B12 supplements or injections.

Can I be vitamin D deficient in a tropical country like Malaysia?

Yes. People in hot climates often avoid sun exposure, so vitamin D deficiency is widespread despite year-round sunshine. Vitamin D matters for bones, muscles, hormone production, immune function and metabolic health. Supplementation should only be done after testing, as excessive vitamin D can cause side effects.

What symptoms suggest I might need nutritional screening?

Fatigue, reduced concentration, thinning hair, brittle nails, muscle cramps, numbness in hands and feet, bone or joint pains, and mood changes are common signs of underlying vitamin or mineral deficiencies that nutritional screening can identify.

What is iron deficiency anaemia and how is it treated?

Iron deficiency leads to low haemoglobin, so red blood cells can't carry enough oxygen - causing fatigue, weakness, pale skin, headaches, brittle nails and hair shedding. It's identified through a simple blood test and treated with oral or IV iron. At Hisential we look for the underlying cause (absorption issues, GI bleeding, heavy menstrual loss) so the deficiency doesn't return.

Why is vitamin B12 deficiency common in Asia?

Vitamin B12 is found almost exclusively in animal-based foods (especially organ meat) and is largely absent from plant foods, so Asian diets often supply less B12. Conditions like atrophic gastritis, pernicious anaemia, IBD, alcohol misuse and some medications also impair absorption. Treatment ranges from diet changes to oral B12 supplements or injections.

Can I be vitamin D deficient in a tropical country like Malaysia?

Yes. People in hot climates often avoid sun exposure, so vitamin D deficiency is widespread despite year-round sunshine. Vitamin D matters for bones, muscles, hormone production, immune function and metabolic health. Supplementation should only be done after testing, as excessive vitamin D can cause side effects.

What symptoms suggest I might need nutritional screening?

Fatigue, reduced concentration, thinning hair, brittle nails, muscle cramps, numbness in hands and feet, bone or joint pains, and mood changes are common signs of underlying vitamin or mineral deficiencies that nutritional screening can identify.

Health Screening

Nutritional Screening in Malaysia

Detailed vitamin, mineral and micronutrient testing to uncover sub-clinical deficiencies that drive fatigue, low mood, hair loss and chronic disease risk. Vitamin D, B12, iron, folate, magnesium and more - interpreted by Hisential doctors.

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Nutritional Screening in Malaysia at Hisential Clinic, Bangsar, Kuala Lumpur

OverviewUnderstanding the problem

Studies show one-in-three adults has some form of specific nutritional deficiency - most commonly vitamin D, iron, vitamin B12, folate or magnesium. These low-grade deficiencies rarely cause obvious symptoms in the way scurvy or severe rickets do, so they go undetected for years. Frank malnutrition is uncommon today, but poor dietary patterns, limited sun exposure, plant-heavy diets, gut absorption issues and certain medications quietly drain micronutrient stores. Sub-clinical vitamin D deficiency alone has been linked to higher risk of diabetes, cardiovascular disease, cancer and chronic inflammation. The only reliable way to know what your body is actually short on - rather than guessing with supplements - is a structured nutritional screening with proper blood tests interpreted by a doctor.

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What to look forCommon symptoms

•Persistent fatigue and low energy that doesn't improve with rest
•Poor concentration, brain fog or memory issues
•Thinning hair, hair shedding or brittle nails
•Pale skin, easy bruising or slow wound healing
•Frequent muscle cramps, twitches or restless legs
•Numbness, tingling or pins-and-needles in hands and feet
•Bone or joint aches, especially in the lower back and legs
•Mood changes - low mood, irritability or anxiety

Why it happensPossible causes

•Poor dietary diversity - heavy reliance on processed or refined foods
•Plant-based or restrictive diets without proper B12 and iron planning
•Limited sun exposure - common in tropical office workers (vitamin D)
•Gut absorption issues (atrophic gastritis, IBD, coeliac, post-bariatric)
•Chronic alcohol use depleting B-vitamins, folate and magnesium
•Heavy menstrual loss or undiagnosed GI bleeding causing iron deficiency
•Medications: PPIs, metformin, statins, certain anti-epileptics
•Ageing - reduced absorption efficiency for B12, calcium and vitamin D

How we helpTesting options

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Don't wait

Why You Should Not Delay Treatment

Sub-clinical nutritional deficiencies compound silently. Untreated iron deficiency drives fatigue and hair loss; low vitamin D weakens bones and immunity; B12 deficiency can cause irreversible nerve damage if left long enough. A simple blood draw today gives you a clear baseline and a treatment plan - not another shelf of guessed supplements.

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Clear, evidence-based plan before any supplement or treatment is recommended. No pressure.

Early Treatment Saves

Catching deficiencies early prevents fatigue, hair loss, bone loss and long-term metabolic complications.

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Iron deficiency anaemia

Iron deficiency is common and it leads to the most common type of anaemia called Iron Deficiency Anaemia. Anaemia occurs when there are low haemoglobin levels in your body and this means that red blood cells cannot carry sufficient oxygen to our various organs - which can result in symptoms such as fatigue, wasting, weakness, pale skin, headaches, chest pain, brittle nails, and more.

Fortunately, iron deficiency is readily identified clinically and through lab tests and is also readily treated. There are various types of treatments for iron deficiency anaemia including oral iron treatments, IV iron treatments and more. Depending on the severity of your anaemia, and how quickly you would like to correct it, our physicians can customise the treatment programme for you.

Often, certain clinics may just choose to treat the iron deficiency anaemia but at Hisential, our doctors first focus on the cause of the iron deficiency. In some cases it could be gastrointestinal issues and thus failure to absorb iron. In most cases iron supplements may help - however, if the deficiency is due to the body's inability to absorb iron, doctors may need to tweak the management to address the root causes. Iron deficiency often coexists with other nutritional deficiencies like vitamin C, folate, vitamin B12, and more.

Vitamin B12 deficiency

Its deficiency is quite common, especially in Asian nations. The reason is simple: there are very few vitamin-B12-rich foods. It is almost absent in plant-based foods - vitamin B12 is mainly found in animal-based foods, especially organ meat.

Additionally, some people fail to absorb vitamin B12 in sufficient amounts - like those living with atrophic gastritis, pernicious anaemia, and conditions that affect intestinal health such as inflammatory bowel disease, alcohol misuse, immune system disorders and more. Even some medications may cause its deficiency.

Vitamin B12 deficiency causes chronic fatigue, weakness, pale skin, smooth tongue, gastrointestinal issues, nerve problems, and mental health issues like poor memory and even depression. Our doctors can readily identify vitamin B12 deficiency with the help of blood tests and through clinical examination. Once identified, it may be treated through dietary measures, vitamin B12 supplements, and in some cases, injectables.

Vitamin D deficiency

The deficiency of this sunshine vitamin is widespread in tropical nations. The reason is simple - people living in hot climate zones like Malaysia or Gulf countries avoid sun exposure.

Modern research shows that vitamin D plays an important role in many body functions. For example, it is essential for healthy bones and muscles, the production of various hormones, immune function, and lowering the risk of metabolic disorders, systemic inflammation, and even heart disease.

One can get sufficient vitamin D even by exposing the body to the morning sun. However, that may not be possible in many cases - and in such cases, doctors can recommend vitamin D supplements after understanding the severity. Here it is vital to understand that one should only use vitamin D supplements after consulting healthcare specialists, as excessive vitamin D intake may cause specific side effects.

Quick answers

The Hisential differenceWhy choose Hisential

Comprehensive vitamin, mineral and micronutrient panels - beyond a basic FBC
Doctor-led interpretation, not just a printed lab result
Personalised diet, lifestyle and supplementation plans
IV iron, B12 injections and pharmaceutical-grade vitamin D regimens where indicated
Confidential, unhurried consultations with experienced Hisential clinicians
Follow-up testing to confirm deficiencies have been corrected

Our methodology

How Hisential approaches your care

Every Hisential patient is paired with a Personal Health Concierge - one named contact who coordinates your screening, doctor visits, follow-up tests, and treatment plan end-to-end. We start with a structured intake, agree clear clinical thresholds for action, and only escalate to medication, imaging, or specialist referral when the data supports it. Results are explained in person, not emailed. Recalls, repeat tests, and referrals are scheduled for you so nothing slips between providers - consistent care from one point of contact.

Medically reviewed by Dr. Azzim Emir, MBChB, Cert. Andrology (SMHS)

Last reviewed 1 May 2026 · Next review 1 November 2026

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