Vitamin D Deficiency in Pakistan: The Silent Crisis Affecting 78% of the Population

May 11, 2026 Health & Nutrition MenuPak 12 min read

Pakistan is one of the sunniest countries on earth. It receives abundant ultraviolet radiation for the majority of the year. And yet, according to a comprehensive meta-analysis published in the Journal of Diabetology in 2024, 78% of Pakistanis are vitamin D deficient. That number, drawn from 37 studies covering 19,338 individuals, makes this one of the most significant and most ignored public health crises in the country.

The paradox is real and it has been studied. A country full of sunshine is producing a population that is overwhelmingly short of the one vitamin that sunshine is supposed to provide. This article explains exactly why that happens, what it does to your body, and what you can do about it using foods, sunlight habits, and supplements that are available right now in Pakistan.

The Numbers: What Pakistani Research Actually Shows

The scale of vitamin D deficiency in Pakistan is not a matter of opinion or isolated observation. It is one of the most consistently documented findings in Pakistani medical literature across the last fifteen years.

Sources: Journal of Diabetology meta-analysis 2024 (19,338 participants); Pakistan National Nutrition Survey 2011 & 2018; BMC Public Health cross-sectional study, Dow University of Health Sciences; NIH-published Lahore women study, PMC 2015.

The 2024 meta-analysis is the most comprehensive to date. It pooled findings from 37 separate peer-reviewed studies published in Pakistan between 2010 and 2022. The overall pooled prevalence was 78%, with a 95% confidence interval of 74.2% to 82%. This means the true figure is almost certainly between those bounds. The researchers noted that this deficiency is common, clinically important, and consistently neglected in public health policy.

Among children and adolescents the situation is worse. The same meta-analysis found a pooled prevalence of 84% in that age group, meaning the next generation of Pakistanis is growing up with compromised bone density, weakened immunity, and impaired development linked directly to a deficiency that is both preventable and treatable.

Why Is This Happening in a Sunny Country?

This is the question that every Pakistani doctor who has studied this issue has had to answer. Pakistan sits between 24 and 37 degrees north latitude, receives strong ultraviolet radiation for the majority of the year, and has no shortage of sunshine. So why are 78% of its people deficient in the one vitamin the body makes from sun exposure?

The answer is that sunlight alone is not enough if the conditions for vitamin D synthesis are not met. The human body only synthesizes vitamin D when bare skin is exposed to UVB radiation (wavelengths of 290 to 320 nanometers) for a sufficient duration. Every one of the following factors, all of which are present across Pakistan, blocks or reduces that synthesis dramatically.

Indoor Lifestyles

A study from Dow University of Health Sciences involving 27,880 patients found that deficiency was significantly higher among people with indoor occupations at 71.9% compared to outdoor workers. As Pakistan urbanizes and more of the workforce moves into offices, factories, and households, meaningful sun exposure disappears from daily life. Most urban Pakistanis are indoors for the hours when UVB radiation is strongest.

Cultural Clothing Norms

The NIH-published Lahore study of women of childbearing age found that less than 30 minutes of sun exposure per day independently doubled the risk of vitamin D deficiency. Pakistani women, particularly those who wear full-coverage clothing for religious or cultural reasons, often receive no meaningful UVB radiation on their skin at all, regardless of how much time they spend outdoors. The skin simply cannot synthesize vitamin D through fabric.

Air Pollution in Urban Centers

Urban smog and particulate matter in cities like Lahore, Karachi, and Peshawar absorb and scatter UVB radiation before it reaches the ground. Pakistan's major cities consistently rank among the most polluted in Asia. This means that even people who do go outdoors in cities may be absorbing significantly less UVB than their rural counterparts.

Skin Melanin Content

South Asian skin has higher melanin content than lighter-skinned populations. Melanin is a natural sunscreen: it reduces UV penetration. For darker skin, the same sun exposure produces less vitamin D than it would in lighter-skinned individuals. Pakistanis therefore need more sun exposure than fair-skinned populations to synthesize the same amount of vitamin D.

No Food Fortification Policy

In countries like the United States, Canada, and much of Europe, milk, cereals, and orange juice are routinely fortified with vitamin D. Pakistan has no mandatory food fortification program for vitamin D. Very few locally produced food products contain meaningful amounts of the vitamin, and dietary intake contributes only 10% of vitamin D even under the best circumstances.

Low Awareness and Late Diagnosis

The Lahore women study found illiteracy to be independently associated with a four-times higher risk of vitamin D deficiency. Without awareness that deficiency is possible and testable, most Pakistanis never have their vitamin D levels checked. The symptoms of deficiency overlap with dozens of other conditions, meaning the underlying cause is frequently missed for years.

What Vitamin D Deficiency Does to Your Body

Vitamin D is not just a bone vitamin. It functions as a hormone in the human body and regulates over 200 genes. Its deficiency has documented consequences across multiple organ systems. Here is what the clinical evidence shows.

Who Is Most at Risk in Pakistan

• Women of childbearing age, particularly those who cover skin fully or spend most time indoors
• Pregnant and breastfeeding women (National Nutrition Survey 2011 found 70% deficiency in this group)
• Children and adolescents (84% deficiency rate in meta-analysis subgroup analysis)
• Office workers, factory workers, and students with predominantly indoor routines
• Elderly individuals who spend most of their time at home
• People in urban centers with high air pollution, particularly Lahore and Karachi
• People with low dietary diversity who eat little or no fish, eggs, or dairy
• People with darker skin requiring longer sun exposure for the same vitamin D production
• Individuals with obesity (vitamin D is fat-soluble and can be stored in fat tissue, reducing its availability in blood)
• People with conditions affecting fat absorption, such as celiac disease

Vitamin D Rich Foods Available in Pakistan

Diet contributes only about 10% of the body's vitamin D under normal circumstances. However, when sunlight exposure is inadequate (which it is for most urban Pakistanis), food sources and supplements become the primary way to maintain levels. The following foods are the most effective dietary sources.

Daily Value (DV) based on 800 IU recommended for adults. Fish values vary by species and cooking method. Always consult a healthcare provider for personalized dietary recommendations.

How to Increase Vitamin D Levels: A Practical Pakistan Guide

The fix for vitamin D deficiency in Pakistan requires combining three approaches: controlled sunlight exposure, dietary changes, and where needed, supplementation. All three together are more effective than any one alone.

• Get the right sunlight at the right time. The body only synthesizes vitamin D from UVB radiation, which is strongest between 11 AM and 3 PM. Researchers recommend 15 to 20 minutes of direct exposure on arms, legs, and face during these hours, without sunscreen. In winter, extend this to 20 to 30 minutes. Simply sitting near a sunny window does not work because glass blocks UVB. You must be outside with skin directly exposed to open sky.
• Eat fish at least twice a week. Rohu is the most affordable fatty fish widely available across Pakistan and provides meaningful amounts of vitamin D. Mackerel, sardines, and canned tuna are also good options available in grocery stores. A 100g portion of rohu two to three times per week contributes significantly to daily requirements. Grilling or baking preserves more vitamin D than deep frying.
• Eat eggs daily, yolk included. The vitamin D in an egg is entirely in the yolk. Eating two eggs daily provides roughly 80 to 100 IU of vitamin D. This is not enough on its own but it contributes alongside other sources. Whole eggs are also one of the most affordable and accessible sources of nutrition in Pakistan.
• Add liver to your weekly diet. Chicken liver, widely available and inexpensive at Pakistani butchers and grocery stores, contains 50 to 70 IU of vitamin D per 100g. It is also rich in iron, vitamin B12, and vitamin A. Kaleji (liver curry) is already a culturally familiar dish and an easy way to incorporate this into a weekly routine.
• Sun-expose your mushrooms before cooking. As noted above, placing raw mushrooms in direct midday sunlight for 15 to 20 minutes before cooking is a simple, zero-cost way to convert them into a significant vitamin D source. Place them gill-side up for maximum surface area exposure.
• Check labels on dairy and cereals for fortification. Some Pakistani dairy brands and breakfast cereals now fortify their products with vitamin D. Check the nutritional label for "Vitamin D" or "Cholecalciferol." Fortified products in Pakistan remain rare compared to Western markets, but availability is growing.
• Take a vitamin D3 supplement if dietary and sun sources are insufficient. The National Institutes of Health recommends 600 IU daily for adults under 70, and 800 IU for adults over 70. For people with confirmed deficiency, Pakistani doctors commonly prescribe 1,000 to 5,000 IU of vitamin D3 (cholecalciferol) daily, depending on severity. Always take vitamin D3 with a meal containing healthy fat (like ghee, nuts, or avocado) as it is fat-soluble and absorbs significantly better with fat. Take it in the morning or at lunchtime, not at night.
• Include magnesium-rich foods in your diet. Magnesium is required to activate vitamin D in the body. Without sufficient magnesium, supplemented vitamin D cannot be properly converted to its active form. Foods high in magnesium include almonds, walnuts, sesame seeds (til), spinach (palak), lentils (daal), and bananas, all of which are widely available and used in Pakistani cooking.
• Get your levels tested before and after treatment. A serum 25-hydroxyvitamin D test at any diagnostic lab in Pakistan (Chughtai Lab, Agha Khan, Dr Essa) typically costs between PKR 1,500 and PKR 3,000. It takes 4 to 8 weeks of consistent supplementation for levels to meaningfully rise. Retest after 8 to 12 weeks to confirm your levels are in the sufficient range (above 30 ng/mL). Do not guess your dose. High-dose supplementation without testing can cause vitamin D toxicity.

What Doctors and Researchers Are Recommending for Pakistan

The 2024 Journal of Diabetology meta-analysis concluded with a direct call to action for Pakistani health authorities. The researchers described the deficiency as common, important, and neglected, and specifically identified the absence of a national food fortification program as a critical policy gap.

The 2025 Cureus study on cardiovascular risk in young Pakistani adults recommended routine vitamin D screening as part of standard preventive care for adults under 35, given the high prevalence and the documented link between deficiency and early cardiovascular indicators.

Multiple researchers have called for Pakistan to follow the example of countries like the UK, Canada, and the United States in mandating vitamin D fortification of staple foods, particularly milk, wheat flour, and cooking oil, which reach the broadest section of the population. Until such a policy exists, the burden falls on individuals and their healthcare providers.

Recommended Daily Intake: How Much Do You Actually Need

The Recommended Dietary Allowance (RDA) for vitamin D set by the National Institutes of Health is 600 IU (15 mcg) per day for adults aged 1 to 70, and 800 IU (20 mcg) for adults over 70. The Tolerable Upper Intake Level, the maximum amount unlikely to cause harm, is 4,000 IU per day for adults.

For people with confirmed deficiency, a doctor may prescribe much higher doses short-term (50,000 IU per week, for example) to restore levels quickly, followed by a maintenance dose once levels normalize. This must be done under medical supervision. Self-prescribing very high doses over extended periods can cause vitamin D toxicity, which manifests as nausea, weakness, frequent urination, kidney problems, and abnormal calcium deposits.

Frequently Asked Questions