Sweet Sensing in Type 2 Diabetes
This study is investigating why people with type 2 diabetes and prediabetes might crave more sugar. Many people with type 2 diabetes find it harder to taste sweetness, which can lead them to eat more sugary foods to get the same satisfying feeling. This can make their diabetes worse. We aim to understand if these changes in taste and brain responses to sweetness contribute to sugar intake. We'll be looking at taste sensitivity on the tongue and using special brain scans (fMRI) to see how the brain reacts to sweet tastes. The goal is to find new ways to help people with diabetes manage their sugar intake and improve their health.
At a glance
What is this study about?
Diabetes, especially type 2 diabetes, is becoming more common in the UK and around the world. Eating too much sugar is a big risk factor for developing type 2 diabetes and can make it harder to control for those who already have it. Interestingly, some research suggests that people with type 2 diabetes might not taste sweetness as strongly as others. This could mean they eat more sugar to get the same pleasant feeling, which then makes their blood sugar levels worse. We want to explore this connection further and understand it better.
Our study is divided into different parts. Firstly, we want to confirm if people with type 2 diabetes really do have a reduced sense of sweet taste on their tongue and if this is linked to how much sugar they prefer and actually eat. Secondly, we'll use a special type of brain scan called an fMRI. This scan is like a very powerful camera that shows us which parts of the brain are active when someone tastes something sweet. We want to see if the brains of people with diabetes or prediabetes react differently to sweetness compared to healthy individuals.
By understanding how sweet tastes are sensed and processed in the body and brain, we hope to find new ways to help people with prediabetes and type 2 diabetes. This research could lead to new treatments or advice that helps them manage their sugar intake, improve their blood sugar control, and ultimately lead healthier lives.
Key takeaways
- Exploring why people with diabetes might crave more sugar.
- Using taste tests and brain scans (fMRI) to understand sweet perception.
- Aims to develop new ways to manage blood sugar for people with diabetes.
- Looking for adults aged 18-60 with type 2 diabetes, prediabetes, or no diabetes.
- No new medications are given; participation involves taste testing and brain scans.
Who may be eligible?
This study is looking for adults aged between 18 and 60 years old. We are interested in people with type 2 diabetes, those with prediabetes, and healthy individuals who do not have diabetes.
For those with type 2 diabetes, your condition should have been diagnosed within the last 10 years and you should only be taking metformin to manage it. If you have prediabetes, you should have been diagnosed at least 3 years ago. Healthy volunteers will need to have had a recent blood test (HbA1c) to confirm they don't have diabetes; if you haven't, we can arrange one for you. For the brain scan parts of the study, we specifically need people who are right-handed.
There are some reasons you might not be able to join. For example, if you are pregnant or breastfeeding, take insulin or other diabetes medications (besides metformin), or have certain long-term health conditions affecting your brain or stomach. We also can't include smokers, or anyone who has metal implants or can't lie flat for a brain scan.
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 between 18 and 60 years old?
- Do you have type 2 diabetes (only taking metformin) or prediabetes, or are you generally healthy?
- Are you right-handed (for the brain scan part of the study)?
- Are you not pregnant or breastfeeding?
- Do you not have any metal implants in your body?
- Are you a non-smoker?
What does participation involve?
If you join this study, it will involve a few different visits. In the first part, we'll check your sense of sweet taste and ask about your usual sugar intake. If you continue to the second and third parts, these sessions will involve having an fMRI brain scan. This means lying still inside a special scanner for a period. No medication will be given as part of this study beyond your current metformin if you have diabetes. The total duration of your participation will depend on which parts of the study you are involved in, but details will be fully explained before you agree to take part. There is no long-term follow-up required after the study ends.
Potential risks and benefits
Locations (1)
- University of NottinghamVerified postcodeNottingham, United Kingdom
Common questions
What is HbA1c?
HbA1c is a blood test that measures your average blood sugar levels over the past 2-3 months. It's used to diagnose diabetes and prediabetes and to monitor blood sugar control.
What is an fMRI scan?
An fMRI (functional magnetic resonance imaging) scan is a safe imaging technique that uses strong magnets and radio waves to create detailed pictures of your brain activity. It does not use X-rays.
Will I receive any treatment as part of this study?
No, this study is observational, meaning we are studying current health conditions. No new medications or treatments will be given as part of your participation, beyond your usual care.
Will I know my results?
While individual results are usually kept private for research purposes, if any findings are medically important, we will inform you and your doctor.
Do I have to pay to take part?
No, participating in this study is free of charge. Travel expenses might be reimbursed, but you should check with the study team.
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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