Vitamin D is essential for calcium absorption and bone health. In Afghanistan, deficiency is not the exception — it is the norm. Pharmacists are often the first professionals patients ask about fatigue, bone pain or supplements, so knowing the evidence matters.
How common is deficiency?
- The National Nutrition Survey Afghanistan 2013 (Ministry of Public Health and UNICEF, all 34 provinces) found 95.5% of women aged 15–49 had vitamin D deficiency (below 20 ng/mL), and 64.7% had severe deficiency (below 8 ng/mL).
- In the same survey, 81.0% of children aged 6–59 months were deficient.
- A 2024 study of 510 school children aged 6–15 in Kandahar found 85.5% below 20 ng/mL and 52.4% below 10 ng/mL.
Why it happens
The body makes vitamin D in the skin when exposed to sunlight. Risk rises with limited sun exposure (staying indoors, clothing that covers most of the skin), darker skin, exclusive breastfeeding without supplementation (breast milk contains little vitamin D), older age, obesity and conditions that reduce fat absorption. Few foods contain much vitamin D naturally.
How deficiency is defined
| Serum 25(OH)D | Interpretation (US National Institutes of Health) |
|---|---|
| Below 12 ng/mL (30 nmol/L) | Deficiency; risk of rickets and osteomalacia |
| 12–20 ng/mL (30–50 nmol/L) | Inadequate for bone health |
| 20 ng/mL (50 nmol/L) and above | Adequate for most people |
| Above 50 ng/mL (125 nmol/L) | Possible adverse effects |
Daily needs and upper limits
| Age | Recommended daily intake | Upper limit per day |
|---|---|---|
| 0–12 months | 400 IU (10 mcg) | 1,000–1,500 IU |
| 1–70 years | 600 IU (15 mcg) | 2,500–4,000 IU (by age) |
| Over 70 years | 800 IU (20 mcg) | 4,000 IU |
| Pregnancy and breastfeeding | 600 IU (15 mcg) | 4,000 IU |
Daily dosing or a single large dose?
High-dose products such as De-Sol 600,000 IU Injection (cholecalciferol 600,000 IU/mL, oral or IM) are used for treating established deficiency. The dose and schedule must be set by the prescriber for the individual patient. The evidence to keep in mind:
- The Global Consensus on nutritional rickets (2016) gives single oral treatment doses by age: 50,000 IU (3–12 months), 150,000 IU (1–12 years) and 300,000 IU (over 12 years), followed by maintenance, with calcium. It recommends oral treatment because it restores levels faster than intramuscular injection.
- The Endocrine Society (2024) suggests daily, lower-dose vitamin D rather than intermittent high doses for adults aged 50 and over.
- A randomised trial in older women found that a single annual dose of 500,000 IU increased falls and fractures (Sanders et al., JAMA 2010).
- Too much vitamin D raises blood calcium, causing nausea, vomiting, weakness and, in severe cases, kidney damage and heart rhythm problems.
Pharmacists can help by confirming the prescribed dose and interval, checking for other vitamin D products the patient already takes, and advising patients not to repeat high doses on their own.
Beyond bone health
Vitamin D also appears in combination products such as Neuro-Light Tablet, which pairs vitamin D3 with methylcobalamin, alpha lipoic acid, folic acid and pyridoxine for nerve support in people with diabetes. See the full supplement range.
Sources
- National Nutrition Survey Afghanistan 2013 — MoPH / UNICEF (ReliefWeb)
- Vitamin D status among school children in Kandahar. Scientific Reports 2024
- Vitamin D — Fact Sheet for Health Professionals, NIH Office of Dietary Supplements
- Munns CF et al. Global Consensus Recommendations on Prevention and Management of Nutritional Rickets, 2016
- Endocrine Society — 2024 vitamin D guideline announcement
- Sanders KM et al. Annual high-dose oral vitamin D and falls and fractures in older women. JAMA 2010;303(18):1815–1822
This article is for healthcare professionals and trade customers and does not replace the product insert or a prescriber’s judgement. Always follow the prescribing information supplied with the product.