Comparison of the Bioavailability of the Flavanol of Grape Extracts
Scientists are studying how beneficial plant compounds, called polyphenols, from grape extracts are absorbed and used by the body. These polyphenols, also found in cocoa and tea, are known for their potential health benefits, like protecting the heart. The study aims to understand how our bodies, including our gut bacteria, process these compounds. This improved understanding could help create new healthy food products or supplements that deliver these benefits more effectively. We already know a diet rich in polyphenols is good for you, but how grape seed polyphenols work in detail within the human body isn't fully clear. This research hopes to fill that gap.
At a glance
What is this study about?
You might have heard about plant compounds called polyphenols in foods like dark chocolate, tea, and grape seeds. These are natural substances that many scientists believe are good for our health, potentially helping to protect against certain diseases and supporting a healthy heart. This study is all about understanding these important compounds, specifically those found in grape seed extracts.
We know that eating foods rich in polyphenols is generally healthy. However, when we eat them, our bodies have to break them down and absorb them. This process can be quite complicated, and not all of the beneficial parts always get into our bloodstream to do their work. Our gut bacteria play a big role in this, changing these compounds into other forms that might be easier for our bodies to use.
This research aims to get a much clearer picture of how polyphenols from grape seed extracts are absorbed, changed by our gut, and then used by our bodies. By understanding these steps better, scientists hope to develop more effective healthy food products or supplements in the future that can deliver the full benefits of these powerful plant compounds.
Key takeaways
- The study investigates how the body absorbs beneficial compounds from grape extracts.
- It aims to inform future healthy food products and supplements.
- Participants must be healthy men aged 18-40.
- The research will involve taking different grape extracts and providing samples.
- Understanding gut bacteria's role in processing these compounds is a key goal.
Who may be eligible?
This study is specifically looking for healthy male volunteers. You need to be between 18 and 40 years old and have a healthy weight for your height (your BMI should be between 20 and 30).
It's important that you are generally healthy, without any long-term medical conditions like heart problems, diabetes, or kidney disease. You also shouldn't be taking any regular medications or antibiotics. We're looking for people who don't follow specific diets (like vegetarian or vegan) and haven't had a big change in their weight recently.
If you're interested in taking part, you'll need to be able to understand the study information and be willing to follow the study plan. You also can't be involved in another medical study or have taken part in one in the last three months.
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.
- Are you male?
- Are you between 18 and 40 years old?
- Are you generally healthy with no long-term medical conditions?
- Are you not taking any regular medications or antibiotics?
- Do you have a healthy weight for your height (BMI between 20-30)?
- Have you not taken part in another study in the last 3 months?
What does participation involve?
This study will likely involve several visits to a clinic. You will be given different versions of the grape polyphenol extract to take, and we will collect blood and possibly other samples at various times to see how your body processes them. Because this is a 'crossover' study, you'll try different versions of the extract at different times, with breaks in between. The study is 'open-label,' meaning both you and the research team will know which extract you're receiving. The total duration of your participation, including all visits and breaks, will be explained in detail by the study team.
Potential risks and benefits
Locations (1)
- Ulster University,Human Intervention Studies UnitColeraine, Co. Londonderry BT521SAVerified postcodeColeraine, United Kingdom
Common questions
What are polyphenols?
Polyphenols are natural compounds found in plants, like grapes, tea, and cocoa, which are thought to have health benefits.
Why is this study focusing on men?
Clinical studies often start with a specific group to control for differences and get clear results. This study is focusing on men aged 18-40.
What does 'bioavailability' mean?
Bioavailability refers to how much of the beneficial substance from the grape extract actually gets absorbed into your body and becomes available to have an effect.
Will I know if I'm getting the grape extract?
Yes, this is an 'open-label' study, meaning you and the researchers will both know when you are taking the grape extract.
Will this study cure any health problems I have?
No, this is a research study to understand how plant compounds work. It’s not designed to treat or cure any medical conditions, and you must be healthy to join.
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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