Vitamin D (Bio)Fortified Shopping Baskets to Improve Vitamin D Status
This study explores if providing families with food baskets, enhanced with vitamin D, can boost vitamin D levels in teenagers during winter. Vitamin D is crucial for strong bones, healthy muscles, and a good immune system. It comes from certain foods, supplements, and sunlight. In the UK, especially in winter, many people, particularly teenagers, don't get enough vitamin D due to weaker sunlight and dietary gaps. Around one in five UK teens have low vitamin D. This research aims to see if a family-based diet including naturally vitamin D-rich foods and foods with added vitamin D can help improve this in adolescents.
At a glance
What is this study about?
This study is looking into ways to help teenagers get enough vitamin D, which is really important for their growing bones, strong muscles, and overall immune system. In the UK, especially during the colder, darker months, it's hard to get enough vitamin D from sunshine alone. Many people rely on food and supplements.
However, a significant number of people, particularly teenagers, don't have enough vitamin D. This can lead to problems like weaker bones. This study wants to find out if providing families with a special 'food basket' – filled with foods that either naturally contain vitamin D or have extra vitamin D added (fortified) – can help improve vitamin D levels in young people aged 11 to 17. By focusing on a family's diet over winter, researchers hope to show a practical way to tackle low vitamin D levels.
The study compares two groups: one group of families will receive food baskets with extra vitamin D, and another group will receive standard food baskets. The researchers will then measure vitamin D levels in the teenagers through blood tests to see if the special food baskets made a difference. This research is important because it could lead to better ways to ensure teenagers get the vitamin D they need for healthy development.
Key takeaways
- Vitamin D is crucial for bones, muscles, and immunity.
- Many UK teenagers have low vitamin D, especially in winter.
- This study explores using vitamin D-enhanced food baskets.
- It aims to boost vitamin D levels in teens through diet.
- Participation involves special foods and two small blood tests.
- It could help improve public health guidelines for vitamin D.
Who may be eligible?
To be part of this study, a household needs to have at least one adult (age 18 or older) and at least one teenager (between 11 and 17 years old).
Participants should be willing to eat most of the food provided by the study. They also need to agree to give two blood samples, each no bigger than about 5 teaspoons, at different times during the study. It's important to note that the study involves eating specific foods, so if you have any food allergies or intolerances, including serious reactions like anaphylaxis, you wouldn't be able to join.
Also, if anyone in the household is currently taking high-dose vitamin D supplements (1000 IU or more) or wouldn't be able to stop taking them for a short period before and during the study, they wouldn't be eligible. The study also cannot include people with conditions that make it difficult to absorb nutrients from food, like coeliac disease, or those following strict vegan or vegetarian diets, as this might affect the results.
Could this study suit you?
Answer these quick questions to see if you may be eligible. This is a guide only — the research team makes the final call.
- Is there at least one adult (18+) and one teenager (11-17) in your household?
- Are you able to eat most of the special foods provided by the study?
- Are you willing to provide two small blood samples?
- Does anyone in your household have severe food allergies or intolerances?
- Are you able to pause high-dose vitamin D supplements (if applicable) for the study duration?
- Does anyone in your household have a condition like coeliac disease or follow a vegan/vegetarian diet?
What does participation involve?
If you take part in this study, your household will be provided with food baskets. You'll be asked to eat mostly these foods during the study period. There will be two occasions where you'll need to provide a blood sample, each sample being small (around 5 teaspoons). Before the study starts, if you currently take high-dose vitamin D supplements, you'll need to stop taking them for about 4 weeks. You will also need to avoid them during the study itself. The total duration of your active involvement in the study will be for the winter months.
Potential risks and benefits
Locations (1)
- Ulster University, Human Intervention Studies Unit, Coleraine, Co. LondonderryVerified postcodeColeraine, United Kingdom
Common questions
What is vitamin D and why is it important?
Vitamin D is a nutrient vital for strong bones, muscles, and a healthy immune system. We mainly get it from sun exposure, certain foods, and supplements.
Why are teenagers particularly at risk of low vitamin D?
Teenagers are growing rapidly, so their bodies need more vitamin D. Many also have diets that don't include enough vitamin D, and don't get enough sunlight, especially in winter.
What does a 'biofortified' or 'fortified' food basket mean?
It means the food basket contains foods that either naturally have more vitamin D (biofortified) or have had extra vitamin D added to them during processing (fortified).
Will I have to eat only the food from the basket?
You will be asked to consume the majority of the food provided in the study baskets to ensure an accurate assessment of the benefits.
What does giving a blood sample involve?
You'll have two small blood samples taken, each about 5 teaspoons, at different points during the study. This is a standard procedure and usually causes only minimal discomfort.
How to find out more
Always speak to your GP or specialist before deciding to take part in a study.
Interested in taking part?
Discussion
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