Breast CancerNCT00120016
Design and Feasibility of a Mediterranean Diet
A study testing dietary counseling in people with Breast Cancer, run by University of Michigan at 1 site in United States.
Trial summary
Epidemiological observations indicate that a Greek-Mediterranean dietary pattern has great potential for cancer prevention, but more definitive data on the preventive effects of this diet are needed. Two distinct aspects of this eating pattern are the type of fat consumed and a high fruit/vegetable intake. Read more about this study
- Who is it for?
- Ages 25 to 65 years, women onlyHealthy volunteers can take part
- Conditions the study is for
- Breast Cancer
- What is being tested?
- dietary counseling
- Type of treatment
- Lifestyle or therapy programme
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 80 participants
- Where
- 1 siteUnited States
- Study dates
- Jan 2004to Jun 2007
- 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 25 to 65 years
- Women only
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- Good health
- Normal weight
- Age 25-65
- Monounsaturated fat intake less than 48% of total fat
- Fruit and vegetable intake less than 5.5 servings/day
- Total fat intake more than 23% of energy
Who cannot join
- High blood pressure
- Obese
- Pregnant or lactating
- On medically prescribed diets
- Taking supplements that obscure the effects of diet
- Diabetes
Trial locations and contacts
1 site in 1 country.
About this study
Epidemiological observations indicate that a Greek-Mediterranean dietary pattern has great potential for cancer prevention, but more definitive data on the preventive effects of this diet are needed. Two distinct aspects of this eating pattern are the type of fat consumed and a high fruit/vegetable intake. If the diet is feasible, it could be used in future clinical trials of breast cancer prevention. In this study, women randomly receive either a control diet or an intervention diet for 6 months. The intervention diet replaces half of the typical American fat intake with foods such as olive oil and nuts. The fruit and vegetable goal is 7-9 servings/day and includes several categories of fruits, vegetables, and herbs. Blood samples are drawn and analyzed for fatty acids derived from fats, micronutrients from fruits and vegetables, and markers of oxidative stress. This dietary trial will provide important data on the ability of women following typical American eating patterns to change their dietary intakes to reflect a Greek-Mediterranean pattern.
Read the detailed description
It has been difficult to identify specific nutrients or food groups associated with breast cancer risk from epidemiological studies done in the U.S. Attention is now turning to the importance of overall eating patterns. A Greek-Mediterranean dietary pattern has great potential for cancer prevention. Two distinct aspects of this eating pattern are the type of fat consumed and a high fruit/vegetable intake relative to average intakes in the United States. We propose to develop and test an exchange list Greek-Mediterranean diet that could be used in future clinical trials of breast cancer prevention in women at increased risk. In this proposed study, women will be randomized to either continue their own usual diet or follow an intervention diet for 6 months. The intervention diet will be designed to decrease polyunsaturated (P) and saturated (S) fat intakes while increasing monounsaturated (M) fat intake. The P:S:M ratio of a typical American diet is about 1.0:1.5:1.7, and the goal for this intervention diet will be 1:2:5, which is much closer to that of the traditional Greek diet. A predominant source of fat will be olive oil. The fruit and vegetable goal will be 7-9 servings/day, depending on energy intake. These dietary changes will be achieved using individualized telephone counseling and a monthly group session with a dietitian. Menus will be provided as examples, but the diets will be self-selected. Compliance to the dietary goals will be assessed by food records and levels of plasma fatty acids, lipids and carotenoids. As a feasibility investigation for the planning of larger trials, plasma 8-isoprostane, oxidized lycopene, insulin and glucose levels will also be assessed since these may lend insight into two possible mechanisms that may be responsible for the cancer preventive effects of this diet. This dietary trial will provide important data on the ability of women following typical American eating patterns to change their dietary intakes to reflect a Greek-Mediterranean pattern. This intervention approach can then be tested for its effects on markers of breast cancer risk in future studies.
- Conditions
- Breast Cancer
- Being tested
- dietary counseling
- Keywords
- cancer prevention, diet, nutrition, polyunsaturated fat, olive oil
- Medical subject headings
- Breast Neoplasms
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
dietary counselingBehavioural
Also called high MUFA diet
telephone counseling
| Study group | Role | What they receive |
|---|---|---|
| 1 | Experimental | Mediterranean diet Receives: Behavioral: dietary counseling |
| 2 | No intervention | non-intervention diet |
What is being measured
The primary outcome is the main question the study is designed to answer.
fatty acid intakes
Measured: 6 months
carotenoids intakes
Measured: 6 months
fatty acid ratios in blood
Measured: 6 months
carotenoids in blood
Measured: 6 months
cholesterol in blood
Measured: 6 months
Secondary outcomes (1)
markers of oxidative stress in blood
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 posted14 Jul 2005 (estimated)
- Study startJan 2004
- Primary completionJun 2007
- Study completionJun 2007
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (2)Papers the sponsor has linked to this study.
- Other trials for Breast CancerStudies of the same condition, open and under way.
- More trials run by University of MichiganThe 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
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 80 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Michigan
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Zora Djuric, University of Michigan
- Investigators
- Zora Djuric, PhD, Principal investigator, University of Michigan
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00120016
- Sponsor's protocol ID
- 051517
- Other IDs
- 03B043-REV
- Status last verified
- Nov 2008
- First submitted
- 6 Jul 2005
- Last updated
- 20 Dec 2012
- Results posted
- No
- Data monitoring committee
- Yes
Publications
Djuric Z, Ren J, Blythe J, VanLoon G, Sen A. A Mediterranean dietary intervention in healthy American women changes plasma carotenoids and fatty acids in distinct clusters. Nutr Res. 2009 Mar;29(3):156-63. doi: 10.1016/j.nutres.2009.03.001.
PubMed 19358929Djuric Z, Vanloon G, Radakovich K, Dilaura NM, Heilbrun LK, Sen A. Design of a Mediterranean exchange list diet implemented by telephone counseling. J Am Diet Assoc. 2008 Dec;108(12):2059-65. doi: 10.1016/j.jada.2008.09.006.
PubMed 19027409
Study at a glance
From the registry record, last updated by the sponsor on 20 Dec 2012. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Design and Feasibility of a Mediterranean Diet
- ClinicalTrials.gov ID
- NCT00120016
- Acronym / sponsor ID
- 051517
- Conditions
- Breast Cancer
- Keywords
- cancer prevention, diet, nutrition, polyunsaturated fat, olive oil
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 80 participants (actual)
- Lead sponsor
- University of MichiganUniversity, hospital or other
- Study start
- Jan 2004
- Primary completion
- Jun 2007 (actual)
- Study completion
- Jun 2007 (actual)
- First posted
- 14 Jul 2005 (estimated)
- 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.
Epidemiological observations indicate that a Greek-Mediterranean dietary pattern has great potential for cancer prevention, but more definitive data on the preventive effects of this diet are needed. Two distinct aspects of this eating pattern are the type of fat consumed and a high fruit/vegetable intake. If the diet is feasible, it could be used in future clinical trials of breast cancer prevention. In this study, women randomly receive either a control diet or an intervention diet for 6 months. The intervention diet replaces half of the typical American fat intake with foods such as olive oil and nuts. The fruit and vegetable goal is 7-9 servings/day and includes several categories of fruits, vegetables, and herbs. Blood samples are drawn and analyzed for fatty acids derived from fats, micronutrients from fruits and vegetables, and markers of oxidative stress. This dietary trial will provide important data on the ability of women following typical American eating patterns to change their dietary intakes to reflect a Greek-Mediterranean pattern.
Detailed description
It has been difficult to identify specific nutrients or food groups associated with breast cancer risk from epidemiological studies done in the U.S. Attention is now turning to the importance of overall eating patterns. A Greek-Mediterranean dietary pattern has great potential for cancer prevention. Two distinct aspects of this eating pattern are the type of fat consumed and a high fruit/vegetable intake relative to average intakes in the United States. We propose to develop and test an exchange list Greek-Mediterranean diet that could be used in future clinical trials of breast cancer prevention in women at increased risk. In this proposed study, women will be randomized to either continue their own usual diet or follow an intervention diet for 6 months. The intervention diet will be designed to decrease polyunsaturated (P) and saturated (S) fat intakes while increasing monounsaturated (M) fat intake. The P:S:M ratio of a typical American diet is about 1.0:1.5:1.7, and the goal for this intervention diet will be 1:2:5, which is much closer to that of the traditional Greek diet. A predominant source of fat will be olive oil. The fruit and vegetable goal will be 7-9 servings/day, depending on energy intake. These dietary changes will be achieved using individualized telephone counseling and a monthly group session with a dietitian. Menus will be provided as examples, but the diets will be self-selected. Compliance to the dietary goals will be assessed by food records and levels of plasma fatty acids, lipids and carotenoids. As a feasibility investigation for the planning of larger trials, plasma 8-isoprostane, oxidized lycopene, insulin and glucose levels will also be assessed since these may lend insight into two possible mechanisms that may be responsible for the cancer preventive effects of this diet. This dietary trial will provide important data on the ability of women following typical American eating patterns to change their dietary intakes to reflect a Greek-Mediterranean pattern. This intervention approach can then be tested for its effects on markers of breast cancer risk in future studies.
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| 1 | Experimental | Behavioral: dietary counselingMediterranean diet |
| 2 | No intervention | –non-intervention diet |
Who may qualify
- Ages
- 25 to 65 years
- Sex
- Female only
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (6 listed)
- Good health
- Normal weight
- Age 25-65
- Monounsaturated fat intake less than 48% of total fat
- Fruit and vegetable intake less than 5.5 servings/day
Key exclusion criteria (6 listed)
- High blood pressure
- Obese
- Pregnant or lactating
- On medically prescribed diets
- Taking supplements that obscure the effects of diet
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 |
|---|---|---|
| dietary counselingAlso: high MUFA diettelephone counseling | Behavioural | 1 |
Primary outcome
fatty acid intakes
Time frame: 6 months
carotenoids intakes
Time frame: 6 months
fatty acid ratios in blood
Time frame: 6 months
carotenoids in blood
Time frame: 6 months
cholesterol in blood
Time frame: 6 months
1 secondary outcome
markers of oxidative stress in blood
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 20 Dec 2012.
- Results publication: PubMed 19358929Djuric Z, Ren J, Blythe J, VanLoon G, Sen A. A Mediterranean dietary intervention in healthy American women changes plasma carotenoids and fatty acids in distinct clusters. Nutr Res. 2009 Mar;29(3):156-63. doi: 10.1016/j.nutres.2009.03.001.
- Results publication: PubMed 19027409Djuric Z, Vanloon G, Radakovich K, Dilaura NM, Heilbrun LK, Sen A. Design of a Mediterranean exchange list diet implemented by telephone counseling. J Am Diet Assoc. 2008 Dec;108(12):2059-65. doi: 10.1016/j.jada.2008.09.006.
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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.
Zora Djuric, PhD principal investigator
University of Michigan
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing dietary counseling in people with Breast Cancer, run by University of Michigan at 1 site in United States.
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 6 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 20 Dec 2012. 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 United States. 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?
fatty acid intakes (time frame: 6 months). The study lists 5 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00120016, which also lists 2 linked publications.
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 20 Dec 2012.