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| Sponsors and Collaborators: |
University of Copenhagen Arla amba, Denmark The Danish Dairy Research Foundation, Denmark FOOD Graduate School, the Royal Veterinary & Agricultural University, Denmark The Danish Research Agency, Denmark Dutch dairy Association, Holland Pharna Vinci, Denmark |
|---|---|
| Information provided by: | University of Copenhagen |
| ClinicalTrials.gov Identifier: | NCT00464035 |
Purpose
The purpose of this study is to investigate the effect of calcium on postprandial lipid profile and appetite.
| Condition | Intervention |
|---|---|
|
Obesity |
Behavioral: high calcium intake |
| Study Type: | Interventional |
| Study Design: | Educational/Counseling/Training, Randomized, Open Label, Placebo Control, Crossover Assignment, Efficacy Study |
| Estimated Enrollment: | 18 |
| Study Start Date: | February 2005 |
| Estimated Study Completion Date: | October 2005 |
Several reports have found inverse associations between calcium intake and body weight. Intervention studies have shown that a high calcium diet resulted in a greater body weight loss than a low calcium diet. In addition, it seems that calcium from dairy products have a more profound effect than calcium from supplements. The mechanism of this additional dairy effect is not yet clear, but one possible explanation could be reduced absorption of fat in the gut. The increase in fecal fat excretion on a high calcium diet could be due to the formation of calcium-fatty acid soaps in the gut.
The long term effect of a high calcium intake have been under intense investigation, but as far as we know the acute effect of a high calcium intake have not yet been examined. A study concerning the acute effects could help us understand the effect of calcium on the absorption of fat. After a meal triglyceride (TG) is packaged with cholesterol, lipoproteins and other lipids into particles called chylomicrons. Earlier studies have shown that the fatty acid pattern of chylomicron lipids postprandial was very similar to that of the ingested fat. If we assume that calcium inhibits the absorption of fat, we would expect a reduced total plasma triglyceride concentration after a calcium-rich meal.
Appetite involves many different sensations among which hunger and satiety are the most investigated. Several different hormones are involved in the regulation of appetite. Some of these hormones are known to respond to the intake or absorption of fat. If the absorption of fat is inhibited the regulation of appetite most likely will be affected. In the long term this could be important because an increased appetite probably would increase energy intake and thereby reducing the weight loss we otherwise might have accomplished by the reduced absorption of fat.
Eligibility| Ages Eligible for Study: | 18 Years to 50 Years |
| Genders Eligible for Study: | Male |
| Accepts Healthy Volunteers: | Yes |
Inclusion Criteria:
Exclusion Criteria:
Contacts and Locations| Denmark | |
| Institute of Human Nutrition | |
| Copenhagen, Denmark, 1958 | |
| Principal Investigator: | Arne Astrup, Prof. Dr. | Institute of Human Nutrition, the Royal Veterinary & Agricultural University, Denmark |
More Information
| Study ID Numbers: | KF 01-144/02 |
| Study First Received: | April 19, 2007 |
| Last Updated: | April 19, 2007 |
| ClinicalTrials.gov Identifier: | NCT00464035 |
| Health Authority: | Denmark: Ministry of the Interior and Health |
|
Obesity Calcium Fat absorption Postprandial lipid profile appetite |
|
Body Weight Calcium, Dietary Signs and Symptoms Obesity |
Nutrition Disorders Overweight Overnutrition |
