TrialPath — Discover research opportunities near you

What is this study?

The PREDICT 3 study will build on previous research in over 2,000 individuals to further refine machine learning models that predict individual responses to foods, with the aim of advancing precision nutrition science and individualized dietary advice. The study incorporates both standardized and controlled dietary intervention, for the purpose of testing postprandial responses to specific mixed meals, in addition to a free-living period with a dietary record for measuring responses to a large variety of meals consumed in a realistic context, where the role of external factors (e.g.

It is , overseen by an independent and licensed medical staff.

Read the full clinical description

The PREDICT 3 study will build on previous research in over 2,000 individuals to further refine machine learning models that predict individual responses to foods, with the aim of advancing precision nutrition science and individualized dietary advice. The study incorporates both standardized and controlled dietary intervention, for the purpose of testing postprandial responses to specific mixed meals, in addition to a free-living period with a dietary record for measuring responses to a large variety of meals consumed in a realistic context, where the role of external factors (e.g. exercise, sleep, time of day) on postprandial responses may be determined. For the first time this PREDICT study is built on top of a commercial product which will allow access to a much larger group of participants who are already collecting large amounts of data through digital and biochemical devices that can contribute to science.

Who this study is looking for

In plain language, from the study's own rules. The study team confirms the full details with you — this isn't a final yes or no.

✅ You may be able to join if…

•You are enrolled in the commercial ZOE testing program.
•You can be any sex.
•You are at least 18 years old (or at least 19 years old if you live in Alabama or Nebraska).
•Your BMI is 16.5 or higher (BMI ≥ 16.5 kg/m²).
•You live in the continental US (except New York) or you live in the UK, and you can follow the study steps and give consent.

🚫 You may not be able to join if…

•You cannot safely eat the pre-made test meals (for example, because of an allergy) or you do not want to eat those foods.
•You are pregnant.
•You had a heart attack, stroke/TIA, or major surgery in the last 2 months.
•You cannot read and write in English.
•If you are in the US, you must be under care for chronic medical conditions and have checked with your primary care physician that the study is safe for you. (This is listed under inclusion.)

Are you a good fit?

Simplified highlights. The study team always confirms the full details with you.

✓Adults roughly 18–any age
✓A BMI around 16.5 or higher
✓Have Obesity / overweight or Type 2 diabetes

!Some conditions may not be a fit: Heart / cardiovascular disease
!Not for people who are pregnant or breastfeeding

What to expect, step by step

1
Usually a few weeks
The study team checks whether the study is a good fit for you, with a visit and sometimes lab tests. You can ask any questions before deciding.
2
Treatment
If you join and choose to continue, you receive the study treatment and are watched closely by medical staff.
3
Follow-up
After treatment, the team checks on your health and confirms the visit schedule with you. You can leave the study at any point.

Has this treatment been tested before?

The study team can share what safety testing has been done so far.

What you need to know before you apply

What is this study testing?+

The PREDICT 3 study will build on previous research in over 2,000 individuals to further refine machine learning models that predict individual responses to foods, with the aim of advancing precision nutrition science and individualized dietary advice. The study incorporates both standardized and controlled dietary intervention, for the purpose of testing postprandial responses to specific mixed meals, in addition to a free-living period with a dietary record for measuring responses to a large variety of meals consumed in a realistic context, where the role of external factors (e.g.

Is it safe? Who makes sure of that?+

This is a research study. Every study is reviewed and monitored by an independent ethics board (called an IRB) whose job is to protect participants, and care is overseen by licensed medical staff. You'll be told the known risks before you agree to anything, and you can stop at any time.

Will I get a placebo instead of the real treatment?+

Some studies compare a treatment against a placebo (an inactive version), and some don't. If this one does, the study team will explain your chances of receiving the active treatment before you decide. Nothing is hidden from you.

Do I have to stop taking my current medications?+

It depends on the study. Some let you stay on your current medications and some ask you to adjust them. Never stop a medication on your own — the study team will review everything with you first.

Does it cost anything? Will I be paid?+

Study-related care is provided at no cost to you. Some studies also pay for your time; the coordinator can tell you if this one does. You should never be asked to pay to take part.

Do I need insurance? Will anyone ask about my immigration status?+

No. You do not need health insurance to take part in a research study, and you will not be asked about your immigration status to join. Taking part is about whether you're a medical fit for the study.

What if English isn't my first language?+

You have the right to understand everything before you agree. Study sites can often provide materials or an interpreter in your language — you can ask the coordinator for one.

Is my information private?+

Yes. Your health information is only shared with the study sites you choose to be contacted by, and only to help match and enroll you. It is never sold, and you can ask us to delete it at any time.

Personalized Responses to Dietary Composition Trial 3