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Specialty coffee may sharpen minds of people with diabetes

NCT ID NCT07420699

Symptom relief Sponsor: University of Reading Source: ClinicalTrials.gov ↗

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looked at whether drinking specialty coffee (a type high in a natural compound called chlorogenic acid) could improve memory, thinking speed, and attention in people with type 2 diabetes. Forty coffee drinkers with diabetes took part, drinking either specialty or regular coffee one week apart. Researchers tested their brain function before, 5 hours after, and 24 hours after drinking coffee.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
specialty coffee (high in chlorogenic acid)
What this could lead to
If it works, this could suggest that choosing a certain type of coffee might help protect memory and thinking skills in people with type 2 diabetes.
What could go wrong
This is a very small, early study with only 40 people. The effects may be small or not last long, and results may not apply to everyone with diabetes.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

40 people

The number who actually took part.

Started

Nov 2023

Finished

Aug 2024

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

30 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Age 30 years or more * Formal diagnosis of Type 2 Diabetes for 1 year or more * Current coffee drinkers, 4 or fewer cups daily (a cup is 8 oz) Exclusion Criteria: * Consuming on average more than 5 cups of coffee daily * Regularly consuming specialty coffee (participants will be provided with a list of these coffees)

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Conditions

The condition(s) this trial relates to.

type 2 diabetes mellitus

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Type 2 diabetes

Contacts and locations

Locations

  • Berkeley

    Berkeley, California, 94720, United States

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