Bariatric SurgeryNCT07293624
Effects of the Dietary Inflammatory Index on Systemic Inflammation Markers and Gastrointestinal Symptoms in Individuals With Bariatric Surgery
An observational study of Bariatric Surgery and Bariatric Sleeve Gastrectomy, run by Istanbul Bilgi University at 1 site in Turkey (Türkiye).
Trial summary
The goal of this observational cross-sectional study is to evaluate the relationships between the Dietary Inflammatory Index (DII), systemic inflammatory markers, and gastrointestinal symptoms in adults aged 18-65 who have undergone bariatric surgery. Read more about this study
- Who is it for?
- Ages 18 to 65 years
- Conditions the study is for
- Bariatric Surgery, Bariatric Sleeve Gastrectomy, Inflamation
- What is being tested?
- Observational Intervention and Observetional
- How many people
- 70 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 1 Dec 2025to 30 Jul 2026
- Phase
- Observational
- Are there results?
- Not yet: the study is under way
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 18 to 65 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: Aktif International Uskudar Hospital, Istanbul, Türkiye.
Who may be able to join
- Adult individuals between the ages of 18 and 65,
- Having undergone bariatric surgery at least 3 months prior,
- Individuals who agreed to participate voluntarily in the study and signed the informed consent form,
- Having the cognitive ability/literacy to completely complete the food consumption record and questionnaire forms,
- Individuals with no health conditions that would prevent blood tests,
- Individuals who were regularly followed up after surgery and had no postoperative complications.
Who cannot join
- Individuals diagnosed with gastrointestinal diseases such as inflammatory bowel disease, celiac disease, or short bowel syndrome before or after bariatric surgery,
- Those with a history of diseases that could affect systemic inflammation, such as autoimmune disease, active infection, or cancer,
- Individuals regularly taking medications that could affect inflammation levels, such as corticosteroids, immunosuppressants, or anti-inflammatory drugs,
- Individuals actively or recently using probiotic supplements,
- Pregnant or breastfeeding women,
- Those with a history of chronic alcohol use or substance abuse,
Show all 11Show fewer
- Individuals who experienced serious postoperative complications after surgery (e.g., anastomotic leak, serious infection, or conditions requiring reoperation),
- Individuals with cognitive or communication disabilities that prevented them from providing the necessary information and data to the study or who were lost to follow-up,
- Individuals with chronic organ failure,
- Individuals with a psychiatric diagnosis,
- Individuals who did not consent to their data being used for scientific purposes.
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
About this study
The goal of this observational cross-sectional study is to evaluate the relationships between the Dietary Inflammatory Index (DII), systemic inflammatory markers, and gastrointestinal symptoms in adults aged 18-65 who have undergone bariatric surgery.
The main questions it aims to answer are:
Read more
Does the inflammatory potential of the diet affect systemic inflammation levels (such as SII, CRP, and WBC) in the post-operative period?
Is there an association between the DII score and gastrointestinal symptoms (e.g., bloating, gas, abdominal pain)?
Participants who are at least three months post-bariatric surgery will provide dietary intake data to calculate DII scores, undergo blood tests to measure inflammatory markers, and complete assessments regarding their gastrointestinal symptoms.
- Conditions
- Bariatric Surgery, Bariatric Sleeve Gastrectomy, Inflamation, Systemic Inflammation, Dietary Inflammatory Index (DII), Systemic Inflammation Markers
- Being tested
- Observational Intervention, Observetional
- Keywords
- sleeve gastrectomy, diatary inflammation, bariatric surgery, systemic inflammation
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Observational InterventionOther
This is cross sectional observational study.
ObservetionalOther
This is cross-sectional study. Questionnaire, Dietary Inflammatory Index (DII), systemic inflammatory markers, and gastrointestinal symptoms will be investigated.
What is being measured
The primary outcome is the main question the study is designed to answer.
Biochemical Measurements - Fasting blood glucose
Fasting blood sugar (mg/dL) will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Measured: at the beginning the study 1 times
Biochemical Measurement - Lipid Profile
Participants' biochemical tests (total cholesterol, HDL cholesterol, LDL cholesterol, triglyceride, (mg/dL) will be analyzed in the hospital biochemistry laboratory using routine methods at the beginning of the study from blood samples taken by a nurse after at least 12 hours of fasting and without consuming alcohol for 24 hours before.
Measured: at the beginning the study 1 times
Biochemical Measurements - Liver Enzymes
Participants' liver enzymes tests (ALT, AST, and ALP) (IU) will be analyzed in the hospital biochemistry laboratory using routine methods at the beginning of the study from blood samples taken by a nurse after at least 12 hours of fasting and without consuming alcohol for 24 hours before.
Measured: at the beginning the study 1 times
Biochemical Measurements - CRP
Participants' c-reactive protein tests (CRP) (mg/L) will be analyzed in the hospital biochemistry laboratory using routine methods at the beginning of the study from blood samples taken by a nurse after at least 12 hours of fasting and without consuming alcohol for 24 hours before.
Measured: at the beginning the study 1 times
Anthropometric Measurements - Body weight (kg)
At the beginning and end of the study, body weights (kg) will be measured using a bioelectrical impedance (BIA) device with a sensitivity of 50 grams in accordance with the measurement standards.
Measured: at the beginning the study 1 times
Anthropometric Measurements - Height
Height (cm) will be measured with a stadiometer in the Frankfort plane, standing and with the head upright.
Measured: at the beginning the study 1 times
Body Mass Index
The body mass index (BMI) of the participants will calculated according to the body weight (kg) / height (m)2 formula.
Measured: at the beginning the study 1 times
Body Mass Index Classification
The body mass index (BMI) of the participants is classified according to the World Health Organization (WHO) criteria. BMI ≤ 18.5 kg/m2 is underweight, between 18.5-24.99 kg/m2 is normal, ≥ 25 kg/m2 is overweight, and ≥ 30 kg/m2 is obese.
Measured: at the beginning the study 1 times
Anthropometric Measurements - Fat Mass
At the beginning and end of the study, body fat mass (kg) analysis will be performed using a bioelectrical impedance (BIA) device, paying attention to measurement standards.
Measured: at the beginning the study 1 times
Anthropometric Measurements - Fat ratio calculation
At the beginning and end of the study, body composition analyses will be performed using a bioelectrical impedance (BIA) device with measurement standards. According to the BIA analysis, fat percentage (%) will be calculated as the ratio of total body fat weight to total body weight.
Measured: at the beginning the study 1 times
Anthropometric Measurements - Fat-free mass
At the beginning and end of the study, fat-free mass (kg) will be analyzed using a bioelectrical impedance (BIA) device, paying attention to measurement standards.
Measured: at the beginning the study 1 times
Anthropometric Measurements - Muscle mass
At the beginning and end of the study, lean muscle mass (kg) will be analyzed using a bioelectrical impedance (BIA) device, paying attention to measurement standards.
Measured: at the beginning the study 1 times
Anthropometric Measurements - Total body water
At the beginning and end of the study, total body water (kg) will be analyzed using a bioelectrical impedance (BIA) device, paying attention to measurement standards.
Measured: at the beginning the study 1 times
Biochemical Measurements - HbA1c
HbA1C will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Measured: at the beginning the study 1 times
Biochemical Measurements - Fasting Insulin
Fasting insulin levels (IU) will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Measured: at the beginning of the study
Biochemical Measurements - Urea
The blood urea (mg/dL) will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Measured: at the beginning of the study 1 times
Biochemical Measurements - Serum Albumine
Serum Albumine (mg/dL) will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Measured: at the beginning of the study 1 times
Biochemical Measurements - TSH
TSH (mUI/mL) will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Measured: at the beginning of the study 1 times
Biochemical Measurements - Free T4
Free T4 (ng/dl) will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Measured: at the beginning of the study 1 times
Biochemical Measurements - Serum Electrolyte Level
Serum sodium, potassium and calcium (mg/dL) will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Measured: at the beginning of the study 1 times
Biochemical Measurements - Creatinine
Creatinine levels (mg/dL) will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Measured: at the beginning of the study 1 times
Biochemical Measurements - White blood cell (WBC)
The white blood cell levels (mcL) will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Measured: at the beginning of the study
Biochemical Measurements - Neutrophil count (NEU)
Neutrophil count (NEU) (mcL) will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Measured: at the beginning of the study
Biochemical Measurements - Platelet (PLT)
Neutrophil count (NEU) (mL) will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Measured: at the beginning of the study
Biochemical Measurements - Lymphocyte count (LYM)
Lymphocyte count (LYM) (mcL) will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Measured: at the beginning of the study 1 times
Biochemical Measurements - Systemic Immune Inflammation Index (SII)
Systemic Immune Inflammation Index (SII) will calculates Platelet count X Neutrophil count/Lymphocyte count.
Measured: at the beginning of the study
Prognostic Inflammatory Index (PNI)
Prognostic Inflammatory Index (PNI) will calculated formula "10 × Serum Albumin (g/dL) + (0.005 × Total Lymphocyte Count (/mm³))".
Measured: at the beginning of the study
The dietary inflammatory index
The dietary inflammatory index will be calculated from individuals' 24-hour food consumption averages. The dietary inflammatory index will be calculated as a total of 1,000 calories, taking into account the dietary inflammatory load of the foods consumed. In this study, the dietary inflammatory index will be calculated for a total of 27 food items.
Measured: 3 days
Secondary outcomes (5)
Food Consumption Record
The food consumption record will be taken to evaluate the nutritional status of the participants. Food consumption records will be evaluated in the BeBIS (Nutrition Information System) program and the daily energy (kcal) intake will be calculated.
Measured: 3 days
Food Consumption Record
The food consumption record will be taken to evaluate the nutritional status of the participants. Food consumption records will be evaluated in the BeBIS (Nutrition Information System) program and the daily carbohydrate (g), protein (g), fat (g), saturated fat (g), monounsaturated fatty acid (g), polyunsaturated fatty acid (g), omega-3 fatty acids (g), omega-6 fatty acids (g), and fiber (g) intake will be calculated.
Measured: 3 days
Food Consumption Record
The food consumption record will be taken to evaluate the nutritional status of the participants. Food consumption records will be evaluated in the BeBIS (Nutrition Information System) program and the daily vitamin E (mg), thiamine (mg), riboflavine (mg), niacin (mg), vitamine B5 (mg), vitamin B6 (mg), vitamin C, sodium (mg), potassium (mg), calcium (mg), magnesium (mg), phosphor (mg), iron (mg), zinc (mg), copper (mg), cholesterol (mg) intake will be calculated.
Measured: 3 days
Bristol Stool Form Scale
The Bristol Stool Form Scale, developed by Lewis and Heaton in Bristol, England, is a subjective scale used to assess an individual's stool consistency and bowel habits. This scale assesses defecation status in seven groups: Type 1 and Type 2 constipation; Type 3, Type 4, and Type 5 normal defecation; and Type 6 and Type 7 diarrhea. The form will be asked to participants.
Measured: at the beginning of the study
Gastrointestinal Symptom Assessment Scale
Developed by Revicki and colleagues and validated for Turkish by Turan et al., the GSRS is used to assess common symptoms of gastrointestinal disorders. The GSRS asks how an individual has felt about gastrointestinal issues over the past week. The scale consists of 15 questions, divided into five subscales: diarrhea (3 questions), dyspepsia (4 questions), constipation (3 questions), abdominal pain (3 questions), and reflux (2 questions). The higher the score, the more severe the gastrointestinal symptoms.
Measured: at the beginning of the study
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted19 Dec 2025
- Study start1 Dec 2025
- Primary completion30 Jul 2026 (estimated)
- Study completion30 Jul 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Bariatric SurgeryStudies of the same condition, open and under way.
- 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
- Observational
- Observational model
- Other
- Time perspective
- Cross-sectional
- Enrolment
- 70 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Istanbul Bilgi University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Hande Seven Avuk, Istanbul Bilgi University
- Investigators
- Hande Seven Avuk, Ph.D., Principal investigator, Istanbul Bilgi UniversityGökben Anıl, Principal investigator, Haliç University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07293624
- Sponsor's protocol ID
- BARINFLAMMATION
- Status last verified
- Jul 2026
- First submitted
- 7 Dec 2025
- Last updated
- 10 Jul 2026
- 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 10 Jul 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effects of the Dietary Inflammatory Index on Systemic Inflammation Markers and Gastrointestinal Symptoms in Individuals With Bariatric Surgery
- ClinicalTrials.gov ID
- NCT07293624
- Acronym / sponsor ID
- BARINFLAMMATION
- Conditions
- Bariatric Surgery, Bariatric Sleeve Gastrectomy, Inflamation, Systemic Inflammation, Dietary Inflammatory Index (DII), Systemic Inflammation Markers
- Keywords
- sleeve gastrectomy, diatary inflammation, bariatric surgery, systemic inflammation
- Study type
- Observational
- Recruitment status
- Enrolling by invitation
- Enrolment
- 70 participants (estimated)
- Lead sponsor
- Istanbul Bilgi UniversityUniversity, hospital or other
- Study start
- 1 Dec 2025 (actual)
- Primary completion
- 30 Jul 2026 (estimated)
- Study completion
- 30 Jul 2026 (estimated)
- First posted
- 19 Dec 2025 (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.
The goal of this observational cross-sectional study is to evaluate the relationships between the Dietary Inflammatory Index (DII), systemic inflammatory markers, and gastrointestinal symptoms in adults aged 18-65 who have undergone bariatric surgery.
The main questions it aims to answer are:
Does the inflammatory potential of the diet affect systemic inflammation levels (such as SII, CRP, and WBC) in the post-operative period?
Is there an association between the DII score and gastrointestinal symptoms (e.g., bloating, gas, abdominal pain)?
Participants who are at least three months post-bariatric surgery will provide dietary intake data to calculate DII scores, undergo blood tests to measure inflammatory markers, and complete assessments regarding their gastrointestinal symptoms.
Study design
- Observational model
- Other
- Time perspective
- Cross-sectional
Who may qualify
- Ages
- 18 to 65 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Aktif International Uskudar Hospital, Istanbul, Türkiye.
Key inclusion criteria (6 listed)
- Adult individuals between the ages of 18 and 65,
- Having undergone bariatric surgery at least 3 months prior,
- Individuals who agreed to participate voluntarily in the study and signed the informed consent form,
- Having the cognitive ability/literacy to completely complete the food consumption record and questionnaire forms,
- Individuals with no health conditions that would prevent blood tests,
Key exclusion criteria (11 listed)
- Individuals diagnosed with gastrointestinal diseases such as inflammatory bowel disease, celiac disease, or short bowel syndrome before or after bariatric surgery,
- Those with a history of diseases that could affect systemic inflammation, such as autoimmune disease, active infection, or cancer,
- Individuals regularly taking medications that could affect inflammation levels, such as corticosteroids, immunosuppressants, or anti-inflammatory drugs,
- Individuals actively or recently using probiotic supplements,
- Pregnant or breastfeeding women,
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 |
|---|---|---|
| Observational InterventionThis is cross sectional observational study. | Other | – |
| ObservetionalThis is cross-sectional study. Questionnaire, Dietary Inflammatory Index (DII), systemic inflammatory markers, and gastrointestinal symptoms will be investigated. | Other | – |
Primary outcome
Biochemical Measurements - Fasting blood glucose
Time frame: at the beginning the study 1 times
Fasting blood sugar (mg/dL) will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Biochemical Measurement - Lipid Profile
Time frame: at the beginning the study 1 times
Participants' biochemical tests (total cholesterol, HDL cholesterol, LDL cholesterol, triglyceride, (mg/dL) will be analyzed in the hospital biochemistry laboratory using routine methods at the beginning of the study from blood samples taken by a nurse after at least 12 hours of fasting and without consuming alcohol for 24 hours before.
Biochemical Measurements - Liver Enzymes
Time frame: at the beginning the study 1 times
Participants' liver enzymes tests (ALT, AST, and ALP) (IU) will be analyzed in the hospital biochemistry laboratory using routine methods at the beginning of the study from blood samples taken by a nurse after at least 12 hours of fasting and without consuming alcohol for 24 hours before.
Biochemical Measurements - CRP
Time frame: at the beginning the study 1 times
Participants' c-reactive protein tests (CRP) (mg/L) will be analyzed in the hospital biochemistry laboratory using routine methods at the beginning of the study from blood samples taken by a nurse after at least 12 hours of fasting and without consuming alcohol for 24 hours before.
Anthropometric Measurements - Body weight (kg)
Time frame: at the beginning the study 1 times
At the beginning and end of the study, body weights (kg) will be measured using a bioelectrical impedance (BIA) device with a sensitivity of 50 grams in accordance with the measurement standards.
Anthropometric Measurements - Height
Time frame: at the beginning the study 1 times
Height (cm) will be measured with a stadiometer in the Frankfort plane, standing and with the head upright.
Body Mass Index
Time frame: at the beginning the study 1 times
The body mass index (BMI) of the participants will calculated according to the body weight (kg) / height (m)2 formula.
Body Mass Index Classification
Time frame: at the beginning the study 1 times
The body mass index (BMI) of the participants is classified according to the World Health Organization (WHO) criteria. BMI ≤ 18.5 kg/m2 is underweight, between 18.5-24.99 kg/m2 is normal, ≥ 25 kg/m2 is overweight, and ≥ 30 kg/m2 is obese.
Anthropometric Measurements - Fat Mass
Time frame: at the beginning the study 1 times
At the beginning and end of the study, body fat mass (kg) analysis will be performed using a bioelectrical impedance (BIA) device, paying attention to measurement standards.
Anthropometric Measurements - Fat ratio calculation
Time frame: at the beginning the study 1 times
At the beginning and end of the study, body composition analyses will be performed using a bioelectrical impedance (BIA) device with measurement standards. According to the BIA analysis, fat percentage (%) will be calculated as the ratio of total body fat weight to total body weight.
Anthropometric Measurements - Fat-free mass
Time frame: at the beginning the study 1 times
At the beginning and end of the study, fat-free mass (kg) will be analyzed using a bioelectrical impedance (BIA) device, paying attention to measurement standards.
Anthropometric Measurements - Muscle mass
Time frame: at the beginning the study 1 times
At the beginning and end of the study, lean muscle mass (kg) will be analyzed using a bioelectrical impedance (BIA) device, paying attention to measurement standards.
Anthropometric Measurements - Total body water
Time frame: at the beginning the study 1 times
At the beginning and end of the study, total body water (kg) will be analyzed using a bioelectrical impedance (BIA) device, paying attention to measurement standards.
Biochemical Measurements - HbA1c
Time frame: at the beginning the study 1 times
HbA1C will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Biochemical Measurements - Fasting Insulin
Time frame: at the beginning of the study
Fasting insulin levels (IU) will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Biochemical Measurements - Urea
Time frame: at the beginning of the study 1 times
The blood urea (mg/dL) will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Biochemical Measurements - Serum Albumine
Time frame: at the beginning of the study 1 times
Serum Albumine (mg/dL) will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Biochemical Measurements - TSH
Time frame: at the beginning of the study 1 times
TSH (mUI/mL) will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Biochemical Measurements - Free T4
Time frame: at the beginning of the study 1 times
Free T4 (ng/dl) will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Biochemical Measurements - Serum Electrolyte Level
Time frame: at the beginning of the study 1 times
Serum sodium, potassium and calcium (mg/dL) will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Biochemical Measurements - Creatinine
Time frame: at the beginning of the study 1 times
Creatinine levels (mg/dL) will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Biochemical Measurements - White blood cell (WBC)
Time frame: at the beginning of the study
The white blood cell levels (mcL) will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Biochemical Measurements - Neutrophil count (NEU)
Time frame: at the beginning of the study
Neutrophil count (NEU) (mcL) will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Biochemical Measurements - Platelet (PLT)
Time frame: at the beginning of the study
Neutrophil count (NEU) (mL) will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Biochemical Measurements - Lymphocyte count (LYM)
Time frame: at the beginning of the study 1 times
Lymphocyte count (LYM) (mcL) will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Biochemical Measurements - Systemic Immune Inflammation Index (SII)
Time frame: at the beginning of the study
Systemic Immune Inflammation Index (SII) will calculates Platelet count X Neutrophil count/Lymphocyte count.
Prognostic Inflammatory Index (PNI)
Time frame: at the beginning of the study
Prognostic Inflammatory Index (PNI) will calculated formula "10 × Serum Albumin (g/dL) + (0.005 × Total Lymphocyte Count (/mm³))".
The dietary inflammatory index
Time frame: 3 days
The dietary inflammatory index will be calculated from individuals' 24-hour food consumption averages. The dietary inflammatory index will be calculated as a total of 1,000 calories, taking into account the dietary inflammatory load of the foods consumed. In this study, the dietary inflammatory index will be calculated for a total of 27 food items.
5 secondary outcomes
Food Consumption Record
Time frame: 3 days
Food Consumption Record
Time frame: 3 days
Food Consumption Record
Time frame: 3 days
Bristol Stool Form Scale
Time frame: at the beginning of the study
Gastrointestinal Symptom Assessment Scale
Time frame: at the beginning of the study
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 10 Jul 2026.
- 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.
Hande Seven Avuk, Ph.D. principal investigator
Istanbul Bilgi University
Gökben Anıl principal investigator
Haliç University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Bariatric Surgery and Bariatric Sleeve Gastrectomy, run by Istanbul Bilgi University at 1 site in Turkey (Türkiye).
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 6 inclusion and 11 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: enrolling by invitation, as of the sponsor's last update on 10 Jul 2026. 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 Turkey (Türkiye). 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?
This study is still under way. Results are not available in the source record yet.
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?
Biochemical Measurements - Fasting blood glucose (time frame: at the beginning the study 1 times). The study lists 28 primary outcomes in all. 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 10 Jul 2026; AzTrials last refreshed its copy on 7 Nov 2026.