The objective of this study is to assess to what extent goat's milk is better tolerated than cow's milk among individuals who report being intolerant to cow's milk, and, if so, to understand the underlying factors. To achieve this, digestive discomfort sensations and postprandial kinetics of nutrients after ingestion of cow's or goat's milk will be compared in two populations: individuals intolerant to cow's milk but not to goat's milk, and individuals who show no symptoms of intolerance to either cow's or goat's milk. For this purpose, approaches based on stable isotope labeling of milk will be employed.
Who can participate
Age range
18 Years – 65 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* Individuals who report being intolerant to cow milk but not to goat milk (one group) or tolerant to both cow milk and goat milk (another group)
* Good general health (WHO grade = 0)
* Affiliated with a social security scheme
* Free, informed, and express consent, in accordance with the public health code: 'No research mentioned in 2° of Article L. 1121-1 can be conducted on a person without their free, informed, and express consent.
Exclusion Criteria:
* Individuals under guardianship or curatorship
* Individuals under legal protection
* Any known food allergies
* Anemia: hemoglobin levels below 13 g/dL for men and 12 g/dL for women
* Pregnant women or those likely to be (based on a positive urine pregnancy test at the time of inclusion)
* Excessive alcohol consumption (\>2 drinks/day). Harmful alcohol consumption is assessed by the investigator at the time of inclusion.
* Hypertension, diabetes, digestive tract diseases (except for irritable bowel syndrome, IBS), liver or kidney diseases, severe heart disease. The presence of these conditions will be assessed by the investigator based on usual clinical criteria and the volunteers' declarations during inclusion. Hypertension: Significant arterial hypertension as determined by the investigator or systolic blood pressure greater than or equal to 140 mmHg and/or diastolic blood pressure greater than or equal to 90 mmHg on the day of inclusion. Diabetes: Type 1 or Type 2 diabetes or any fasting blood gluc…
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Digestive discomfort score from 0 to 8 hours post-meal