Effect of Structured, Diet-Focused Educational Intervention on Knowledge, Attitude, and Practice Related to Vitamin D Among Medical Science Students: A Randomized Controlled Trial
This randomized controlled trial demonstrates that a four-session, diet-focused educational intervention significantly improved knowledge, attitudes, and self-reported practices regarding vitamin D among medical science students in Northwestern Iran, with the most substantial gains observed in nutritional knowledge.
Original paper licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). This is an AI-generated explanation of the paper below. It is not written or endorsed by the authors. For technical accuracy, refer to the original paper. Read full disclaimer
Vitamin D is a vital nutrient that the human body needs to keep bones strong and to help the immune system fight off illness. While the body can make this vitamin when skin is exposed to sunlight, many people do not get enough of it. This is especially true in regions like the Middle East and Iran, where cultural habits, such as wearing clothing that covers most of the skin, and a preference for staying indoors can block the sun's rays. Even though medical students are trained to understand how the body works, they often lack specific knowledge about how to get enough vitamin D through their daily meals. They might know the general facts but struggle to identify which foods contain the nutrient or how to prepare them to keep the vitamin intact. This gap between knowing a concept and knowing how to apply it in real life is a common challenge in health education.
Researchers at Khoy University of Medical Sciences in northwestern Iran decided to test whether a specific type of teaching could fix this problem. They wanted to see if a short, structured course focused on food and cooking could improve how medical students understood, felt about, and acted on the need for vitamin D. The team recruited 132 students and randomly split them into two groups. One group received four one-hour lessons over four weeks that taught them the biology of vitamin D, how to find it in foods like fish and eggs, and how to cook these foods without destroying the nutrient. The other group attended four similar sessions on general health topics like sleep and hygiene, but with no mention of vitamin D. This setup allowed the researchers to isolate the effect of the vitamin D lessons from any other changes the students might have experienced.
The results showed that the students who received the vitamin D lessons learned significantly more than those who did not. Before the study began, the students already knew a fair amount about vitamin D in general, but their knowledge about nutrition was much weaker. After the four sessions, the group that learned about vitamin D showed a sharp rise in their understanding of which foods contain the vitamin and how much they need. Their scores on nutrition knowledge jumped by nearly 18 percentage points, while the control group's scores barely moved. The students who took the lessons also improved their attitudes toward seeking out vitamin D and reported making more changes to their daily habits, such as eating more vitamin-rich foods or adjusting how they prepared meals.
The study found that the biggest improvement was in nutritional knowledge, which had been the weakest area for the students to begin with. This suggests that simply telling students facts is not enough; they need practical, hands-on guidance on how to incorporate these nutrients into their lives. The researchers noted that while the students reported better habits, the study did not measure their actual blood levels of vitamin D, so it is not yet known if these new habits led to a physical change in their health. However, the clear difference between the two groups proves that a focused, diet-based educational program can successfully change what students know and how they think about this essential nutrient. The findings suggest that adding similar practical nutrition modules to medical school curriculums could help future doctors better advise patients on preventing vitamin D deficiency.
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