The purpose of this study is to examine the effect of incorporating avocados in meals on post-ingestion glycemic index, insulin response, sensations of satiety and on appetite-related gastrointestinal peptide and hormone release. Also the effect of consuming avocado containing meals on the caloric intake of participants in subsequent eating episodes will be explored.
In this feeding study each subject will participate in one intervention for one day, wait three weeks, come for another intervention, wait three weeks and come for a final intervention- three in total. Participants will be randomly assigned to one of the six treatment sequences. Postprandial response to the control and two avocado-containing test meals will be assessed and compared using a 3 x 3 single blind cross-over design.
The Subjects will be between 25 and 54 years old, female or male, with a BMI of 25 to 30, stable weight, no sports involvement, non-smoking and not dependent on caffeine. In total subject participation will last approximately 9 weeks.
Thirty subjects will be recruited from Loma Linda and surrounding communities. A multi-stage process will be used to select participants. Respondents will fill out a screening form and those qualified will be asked to attend meetings where investigators will provide details and expectations. All participants selected will sign a consent form.