Gram Research analysis of a 2024 survey of 950 adults in southern Bangladesh found that 41.9% use dietary supplements, most often calcium (61.3%), iron (28.9%), and multivitamins (28.6%). Women, people in poorer health, and those aware of supplements were more likely to take them, while regular exercisers were less likely.
A new study from southern Bangladesh, reviewed by Gram Research analysis, found that about 42 percent of adults take dietary supplements. Researchers interviewed 950 randomly chosen adults in person during May and June 2024. The most common products were calcium, iron, and multivitamins, and most people said a healthcare provider had recommended them. Women, people who rated their health as poor, and people who knew about supplements were more likely to use them. Adults who exercised regularly were less likely to take them. Because the study captured one moment in time, it cannot prove cause and effect. Still, it points to a need for clearer national nutrition guidance, stronger supplement rules, and community education on safe use.
Key Statistics
A 2026 cross-sectional study of 950 randomly selected adults in southern Bangladesh found that 41.9% reported using dietary supplements.
The same 2026 study found that calcium was the most commonly used supplement at 61.3%, followed by iron at 28.9% and multivitamins at 28.6%.
Researchers found that 77.4% of supplement users said a healthcare provider had prescribed or recommended the product they took.
The Quick Take
- What they studied: How many adults in southern Bangladesh take dietary supplements, which ones they use, why they use them, and what personal traits are linked to taking them.
- Who participated: 950 adults from communities in southern Bangladesh. They were chosen through a multistage random selection process, and researchers interviewed each person face to face using a standard set of questions.
- Key finding: About 41.9% of participants said they used dietary supplements. Women were about 1.7 times as likely to use them as men, and people who knew about supplements were about 2.9 times as likely to use them, after accounting for other factors.
- What it means for you: Supplements are common in this population, and many people start them on a doctor’s or other healthcare provider’s advice. Anyone considering supplements should talk with a healthcare professional first, since more is not always better and some products can interact with medicines.
The Research Details
This was a cross-sectional study, which means researchers took a single snapshot of people’s habits at one point in time. The survey ran from May to June 2024 in communities across southern Bangladesh.
Researchers used a multistage random sampling method. This approach first selects broad areas, then smaller groups within them, and finally individual adults, so that the final group is more likely to reflect the wider population. Trained interviewers then asked each person the same structured questions face to face.
The team used standard statistical methods to summarize the answers and to test which personal factors, such as sex, health status, exercise habits, and awareness of supplements, were linked to supplement use. They accounted for several factors at once so that each one could be looked at separately.
A cross-sectional design is well suited to measuring how common a habit is and which groups are most likely to have it. Because the survey reached adults through random selection and in-person interviews, its results give a reasonably realistic picture of supplement use in these communities.
The design also has a key limit. It can show that certain traits go along with supplement use, but it cannot show that those traits cause people to take supplements or that supplements cause the traits.
The study used random selection and a large sample of 950 adults, which are strengths. Analyzing several factors together also helps separate their effects. Its results are based on what people reported about themselves, so answers may be affected by memory or by how people wanted to present themselves. The study was published in a peer-reviewed journal, but it is a single study from one region, so it should be read as an important local snapshot rather than a final answer for the whole country.
What the Results Show
The main result is that 41.9% of participants reported using dietary supplements. That means roughly two in every five adults surveyed took at least one product, which is a high share for this kind of product in this region.
The most common supplements were calcium (61.3% of users), iron (28.9%), and multivitamins (28.6%). Calcium’s lead may reflect public concern about bone strength, and iron use may reflect common worries about low blood iron, though the study did not measure these motivations directly.
Most users said they took supplements to treat a health problem (59.5%), and most (77.4%) said a healthcare provider had prescribed or recommended them. This suggests that many people are guided by professional advice, but it also shows that a sizable group uses supplements for health concerns that may need a proper diagnosis.
After adjusting for other factors, women had 1.72 times the odds of using supplements compared with men. Adults who described their health as poor had 1.87 times the odds, and those who said they had good knowledge of supplements had 2.87 times the odds. Adults who reported good health had 36% lower odds of use, and regular exercisers had 39% lower odds.
The findings point to a link between how people view their own health and how often they take supplements. People who feel unwell may be more likely to look for extra support, while people who feel healthy and stay active appear less likely to reach for them.
The strong link between awareness and use is especially important. It suggests that information and marketing may shape choices, and that people who believe they understand supplements may be more inclined to take them. Whether that knowledge is accurate was not clearly measured.
The authors also call for evidence-based national nutrition policies, stronger regulation of supplement products, and targeted community education. These recommendations follow from the high use rates and the variety of reasons people give for taking supplements.
Supplement use is widespread in many parts of the world, and surveys in other countries have often found that women, people with health concerns, and people who are more health-aware are more likely to use them. This study fits that broader pattern.
Research on supplements in South Asia has been more limited. By documenting use in southern Bangladesh, this study adds needed local data, since supplement use can differ with culture, income, and access to healthcare.
Because the study was cross-sectional, it cannot prove that poor health or awareness causes people to use supplements. Future studies that follow people over time would be needed to test cause and effect.
All information came from participants’ own reports, which may be incomplete or inaccurate, especially about the exact products, doses, or how long they were taken. The study also covered only one region of Bangladesh, so results may not apply to the entire country.
The survey did not appear to measure whether supplements were taken safely, at correct doses, or with any benefit. Those questions remain open.
The Bottom Line
Based on this study, supplement use is common among adults in southern Bangladesh, and the pattern is strongly confirmed by the large survey (high confidence in the prevalence figure). The links with sex, health status, awareness, and exercise are reasonably supported but reflect associations, not proof of cause (moderate confidence). Anyone considering supplements should speak with a healthcare provider about whether they are needed, which product fits, and what dose is safe.
This research is most relevant to adults in Bangladesh and similar communities, public health planners, nutrition policymakers, and healthcare workers who advise patients about supplements. Pregnant people, older adults, people who take prescription medicines, and people with chronic conditions should be especially careful and check with a clinician before starting any product. People who are healthy and eat a varied diet may not need supplements at all.
Supplements are not quick fixes. Some, such as iron for confirmed deficiency, may improve symptoms within several weeks, while others, such as calcium or multivitamins, have effects that build over months and are difficult to notice. Anyone who has been prescribed a supplement should plan a follow-up with their provider to check whether it is working and still needed.
Frequently Asked Questions
How many adults in Bangladesh take dietary supplements?
A 2024 survey of 950 adults in southern Bangladesh found that 41.9% reported using dietary supplements. Calcium, iron, and multivitamins were the most common products, and the study was published in BMJ Public Health in 2026.
What supplements do people in southern Bangladesh take most often?
Calcium is the most common, used by 61.3% of supplement users in the study. Iron was used by 28.9% and multivitamins by 28.6%. Most users said a healthcare provider had recommended what they took.
Who is most likely to use dietary supplements?
Women, people who describe their health as poor, and people who report good knowledge of supplements were more likely to use them. Regular exercisers and people who rate their health as good were less likely, according to the 2024 survey of 950 adults.
Do dietary supplements need a doctor’s approval before use?
Many people in the study took supplements on a healthcare provider’s advice, but a sizable group used them for self-treatment. Experts recommend checking with a clinician before starting any supplement, especially if you take prescription medicines or have a chronic condition.
Want to Apply This Research?
- Log each supplement you take, including the product name, the exact dose, and the time of day, and mark whether a healthcare provider recommended it. Check the log weekly and note any days you miss a dose so you can see your real consistency over time.
- Before adding a new supplement, use the app to record your reason for taking it and the health concern behind it, then schedule a check-in with a healthcare provider within 30 days. Use the app’s reminder feature to review your list with your provider rather than adding products on your own.
- Review your supplement list every three months and note any changes in energy, digestion, or symptoms that match your reasons for taking each product. Bring the full list, including over-the-counter items, to every medical appointment, and flag any product you have not discussed with a clinician for review.
This article summarizes a single cross-sectional survey and is for general education only. It does not provide medical advice, and the study cannot prove that any factor causes people to use supplements. Dietary supplements can interact with medicines and may not be appropriate for everyone, so consult a qualified healthcare provider before starting, stopping, or changing any supplement.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.