EndometriosisDieetstudieNCT05714189
The Effect of Dietary Interventions, or no Intervention, on Pain and Quality of Life in Women Diagnosed With Endometriosis
A study testing Low FODMAP diet and Endometriosis diet in people with Endometriosis, run by Amsterdam UMC, location VUmc at 1 site in Netherlands.
Trial summary
This prospective pilot study was performed to explore the influence of a dietary intervention, the Low FODMAP diet or endometriosis diet, on endometriosis-related pain and Quality of Life (QoL). Read more about this study
- Who is it for?
- Any age, women only
- Conditions the study is for
- Endometriosis
- What is being tested?
- Low FODMAP diet and Endometriosis diet
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 62 participants
- Where
- 1 siteNetherlands
- Study dates
- 1 Apr 2021to 31 Dec 2022
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages Any age
- Women only
- No healthy volunteers
- Child, Adult, Older adult
Who may be able to join
- Women diagnosed with endometriosis, either through radiologic imaging (transvaginal ultrasound and/or MRI) or laparoscopy
- A reported pain score of ≥ 3 (Visual Analogue Score (VAS), scale 0-10cm) in one or more of the following symptoms: dysmenorrhea, deep dyspareunia and chronic pelvic pain
Who cannot join
- about to undergo an operation within six months
- Undergone an operation in the past six weeks
- a switch in hormonal therapy within six weeks
- Women that were pregnant or breastfeeding
- women diagnosed with a malignancy
- An additional diagnosis with Coeliac Disease (CD) and/or lactose intolerance.
- Not sufficient in the Dutch or English language.
Trial locations and contacts
1 site in 1 country.
About this study
This prospective pilot study was performed to explore the influence of a dietary intervention, the Low FODMAP diet or endometriosis diet, on endometriosis-related pain and Quality of Life (QoL). Participants could choose between adherence to a diet; the Low FODMAP diet or endometriosis diet, or to contribute to the control group and not adhere to a diet.
Read the detailed description
This prospective pilot study was performed to explore the influence of a dietary intervention, the Low FODMAP diet or endometriosis diet, on endometriosis-related pain and Quality of Life (QoL). Participants could choose between adherence to a diet; the Low FODMAP diet or endometriosis diet, or to contribute to the control group and not adhere to a diet. Women choosing to adhere to a diet were extensively guided by a dietician in training. In addition, both groups are asked to complete three questionnaires over a period of six months; once every two months.
- Conditions
- Endometriosis
- Being tested
- Low FODMAP diet, Endometriosis diet
- Medical subject headings
- Endometriosis
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Low FODMAP dietOther
The Low FODMAP diet is an avoidance diet and consist of three phases. In the first phase, all nutrients high in FODMAPs (high-FODMAPS) are eliminated from the daily diet over a period of 2 to 6 weeks to calm down the bowel. The second phase consists of the addition of FODMAP challenges. During this phase the patient continues the Low FODMAP diet, but will reintroduce one high-FODMAP nutrient once every three days to see whether exposure to this high-FODMAP causes IBS symptoms. When this is not the case, the patient can continue eating this high-FODMAP group in their daily diet. In the third and final phase, the diet is fully personalized. This personalization is based on whether the patient tolerated the high-FODMAP nutrient or not during the FODMAP challenges. Only when the high-FODMAP nutrient is not tolerated, it is advised to permanently remove it from the daily diet.
Endometriosis dietOther
The endometriosis diet The endometriosis diet is a patient experience based, avoidance diet developed by women diagnosed with endometriosis. Therefore no specific recommendations exist regarding the application of the endometriosis diet. With the endometriosis diet, women avoid nutrients they noticed provoked or aggravated their endometriosis-related symptoms such as red meat, coffee, sugar, lactose and soy.
| Study group | Role | What they receive |
|---|---|---|
| Intervention group: adherence to Low FODMAP diet | Other | Women could choose to adhere to the low FODMAP diet, over a period of six months. In the first three months, they received extensive guidance by a dietician in training, in addition to supportive materials such as the Monash app, recipes and grocery lists, in the hope of optimal adherence to the diet. After three months, women were asked to continue the diet independently. In addition, women were asked to complete three questionnaires, one every two months. The questionnaires contained the EHP-30, the GIQLI, and self composed questions on their demographics in the first questionnaire, and their strictness of adherence in the second and third questionnaire. The third questionnaire also contained questions on their satisfaction with the dietary guidance and the dietician in training. Receives: Other: Low FODMAP diet |
| Intervention group: adherence to endometriosis diet | Other | Women could choose to adhere to the endometriosis diet, over a period of six months. In the first three months, they received extensive guidance by a dietician in training, in addition to supportive materials such as the Monash app, recipes and grocery lists, in the hope of optimal adherence to the diet. After three months, women were asked to continue the diet independently. In addition, women were asked to complete three questionnaires, one every two months. The questionnaires contained the EHP-30, the GIQLI, and self composed questions on their demographics in the first questionnaire, and their strictness of adherence in the second and third questionnaire. The third questionnaire also contained questions on their satisfaction with the dietary guidance and the dietician in training. Receives: Other: Endometriosis diet |
| Control group: no diet adherence | No intervention | Women were asked to complete three questionnaires, once every two months. These contained the EHP-30 and GIQLI. The first questionnaire contained questions on their demographics, and whether they applied a diet before. |
What is being measured
The primary outcome is the main question the study is designed to answer.
pain scores
The primary outcome focused on pain scores (in VAS, scale 0-10cm) of the endometriosis-related symptoms dysmenorrhea, deep dyspareunia, chronic pelvic pain, dysuria, dyschezia, tiredness and bloating. Pain scores will be measured on a scale between 0 and 10, where 0 represents no pain at all and 10 the worst pain possible.
Measured: 6 months
Secondary outcomes (3)
Quality of Life (QoL)
Secondary outcome focused on QoL, expressed using the EHP-30 questionnaire. Using the EHP-30, a score between 0 and 100 can be measured for 11 different QoL domains. For every domain, a score of 0 represents best health status through to a score of 100 which represents worst health status.
Measured: 6 months
Gastro-Intestinal Health
Secondary outcome focused on gastro-intestinal health, expressed using the GIQLI questionnaire. With the GIQLI, a score between 0 and 144 can be calculated where 0 represents worst possible gastro-intestinal health and 144 best possible gastro-intestinal health.
Measured: 6 months
Adhesion to dietary intervention
with every follow-up visit, women were asked on their dietary adhesion. they were asked how often they made an exception, with what meal (snack/main meal) and what strictness score they gave themselves. Women could score their strictness between 0 and 10 where 0 represented worst possible strictness and 10 best possible strictness
Measured: 6 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted6 Feb 2023
- Study start1 Apr 2021
- Primary completion31 Dec 2022
- Study completion31 Dec 2022
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for EndometriosisStudies of the same condition, open and under way.
- More trials run by Amsterdam UMC, location VUmcThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Supportive care
- Allocation
- Non-randomised
- Intervention model
- Parallel groups
- Model description
- Women could chose to adhere to a diet or the control group. there was no cross-over.
- Masking
- None (open label)
- Enrolment
- 62 participants (actual)
Sponsor and investigators
- Lead sponsor
- Amsterdam UMC, location VUmc
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Prof. Velja Mijatovic, Amsterdam UMC, location VUmc
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05714189
- Sponsor's protocol ID
- W20_534 # 20.593
- Acronym
- Dieetstudie
- Status last verified
- Feb 2023
- First submitted
- 26 Jan 2023
- Last updated
- 14 Feb 2023
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 14 Feb 2023. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- The Effect of Dietary Interventions, or no Intervention, on Pain and Quality of Life in Women Diagnosed With Endometriosis
- ClinicalTrials.gov ID
- NCT05714189
- Acronym / sponsor ID
- Dieetstudie / W20_534 # 20.593
- Conditions
- Endometriosis
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 62 participants (actual)
- Lead sponsor
- Amsterdam UMC, location VUmcUniversity, hospital or other
- Study start
- 1 Apr 2021 (actual)
- Primary completion
- 31 Dec 2022 (actual)
- Study completion
- 31 Dec 2022 (actual)
- First posted
- 6 Feb 2023 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This prospective pilot study was performed to explore the influence of a dietary intervention, the Low FODMAP diet or endometriosis diet, on endometriosis-related pain and Quality of Life (QoL). Participants could choose between adherence to a diet; the Low FODMAP diet or endometriosis diet, or to contribute to the control group and not adhere to a diet.
Detailed description
This prospective pilot study was performed to explore the influence of a dietary intervention, the Low FODMAP diet or endometriosis diet, on endometriosis-related pain and Quality of Life (QoL). Participants could choose between adherence to a diet; the Low FODMAP diet or endometriosis diet, or to contribute to the control group and not adhere to a diet. Women choosing to adhere to a diet were extensively guided by a dietician in training. In addition, both groups are asked to complete three questionnaires over a period of six months; once every two months.
Study design
- Primary purpose
- Supportive care
- Allocation
- Non-randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 3
- Model description
- Women could chose to adhere to a diet or the control group. there was no cross-over.
| Arm | Type | Receives |
|---|---|---|
| Intervention group: adherence to Low FODMAP diet | Other | Other: Low FODMAP dietWomen could choose to adhere to the low FODMAP diet, over a period of six months. In the first three months, they received extensive guidance by a dietician in training, in addition to supportive materials such as the Monash app, recipes and grocery lists, in the hope of optimal adherence to the diet. After three months, women were asked to continue the diet independently. In addition, women were asked to complete three questionnaires, one every two months. The questionnaires contained the EHP-30, the GIQLI, and self composed questions on their demographics in the first questionnaire, and their strictness of adherence in the second and third questionnaire. The third questionnaire also contained questions on their satisfaction with the dietary guidance and the dietician in training. |
| Intervention group: adherence to endometriosis diet | Other | Other: Endometriosis dietWomen could choose to adhere to the endometriosis diet, over a period of six months. In the first three months, they received extensive guidance by a dietician in training, in addition to supportive materials such as the Monash app, recipes and grocery lists, in the hope of optimal adherence to the diet. After three months, women were asked to continue the diet independently. In addition, women were asked to complete three questionnaires, one every two months. The questionnaires contained the EHP-30, the GIQLI, and self composed questions on their demographics in the first questionnaire, and their strictness of adherence in the second and third questionnaire. The third questionnaire also contained questions on their satisfaction with the dietary guidance and the dietician in training. |
| Control group: no diet adherence | No intervention | –Women were asked to complete three questionnaires, once every two months. These contained the EHP-30 and GIQLI. The first questionnaire contained questions on their demographics, and whether they applied a diet before. |
Who may qualify
- Sex
- Female only
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
Key inclusion criteria (2 listed)
- Women diagnosed with endometriosis, either through radiologic imaging (transvaginal ultrasound and/or MRI) or laparoscopy
- A reported pain score of ≥ 3 (Visual Analogue Score (VAS), scale 0-10cm) in one or more of the following symptoms: dysmenorrhea, deep dyspareunia and chronic pelvic pain
Key exclusion criteria (7 listed)
- about to undergo an operation within six months
- Undergone an operation in the past six weeks
- a switch in hormonal therapy within six weeks
- Women that were pregnant or breastfeeding
- women diagnosed with a malignancy
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Low FODMAP dietThe Low FODMAP diet is an avoidance diet and consist of three phases. In the first phase, all nutrients high in FODMAPs (high-FODMAPS) are eliminated from the daily diet over a period of 2 to 6 weeks to calm down the bowel. The second phase consists of the addition of FODMAP challenges. During this phase the patient continues the Low FODMAP diet, but will reintroduce one high-FODMAP nutrient once every three days to see whether exposure to this high-FODMAP causes IBS symptoms. When this is not the case, the patient can continue eating this high-FODMAP group in their daily diet. In the third and final phase, the diet is fully personalized. This personalization is based on whether the patient tolerated the high-FODMAP nutrient or not during the FODMAP challenges. Only when the high-FODMAP nutrient is not tolerated, it is advised to permanently remove it from the daily diet. | Other | Intervention group: adherence to Low FODMAP diet |
| Endometriosis dietThe endometriosis diet The endometriosis diet is a patient experience based, avoidance diet developed by women diagnosed with endometriosis. Therefore no specific recommendations exist regarding the application of the endometriosis diet. With the endometriosis diet, women avoid nutrients they noticed provoked or aggravated their endometriosis-related symptoms such as red meat, coffee, sugar, lactose and soy. | Other | Intervention group: adherence to endometriosis diet |
Primary outcome
pain scores
Time frame: 6 months
The primary outcome focused on pain scores (in VAS, scale 0-10cm) of the endometriosis-related symptoms dysmenorrhea, deep dyspareunia, chronic pelvic pain, dysuria, dyschezia, tiredness and bloating. Pain scores will be measured on a scale between 0 and 10, where 0 represents no pain at all and 10 the worst pain possible.
3 secondary outcomes
Quality of Life (QoL)
Time frame: 6 months
Gastro-Intestinal Health
Time frame: 6 months
Adhesion to dietary intervention
Time frame: 6 months
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 14 Feb 2023.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Low FODMAP diet and Endometriosis diet in people with Endometriosis, run by Amsterdam UMC, location VUmc at 1 site in Netherlands.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 2 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 14 Feb 2023. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Netherlands. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
pain scores (time frame: 6 months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 14 Feb 2023.