It is well known that medium chain triglycerides (MCTs) and diacylglycerols (DGs) have effects on lowering circulating triglycerides (TGs). In this study, the mixture of MCTs and DGs (MCDGs) examined whether it has beneficial effects on postprandial lipids metabolism compared to long-chain triglycerides (TGs).

A randomized, double-blinded, controlled, cross-over trial was conducted to verify the effects of MCDGs. Twenty-eight healthy male and female subjects aged 21-29 years with normal body weight [18.5 kg/m^2 ≤ body mass index (BMI) < 25 kg/m^2] were recruited. The subjects visited the research site twice over with a seven-day interval after an overnight fast at least 12 hr. On the first visit, the participants were randomly assigned to consume a test or placebo product [test product: muffins containing MCDG oil (MCDG muffin); placebo product: muffins containing LCT oil (LCT muffin)] and ingested the assigned product. On the second visit, the participants consumed the other product that they did not eat on the first visit. On both visit day, the 6-hr meal tolerance test was conducted and started at 8:00 in the morning; venous blood samples were collected before (0 hr) and after ingestion (2, 3, 4, and 6 hr) of the products.

Inclusion Criteria:

• Healthy subjects with normal body weight (18.5 kg/m^2 ≤ body mass index (BMI) < 25 kg/m^2)

Exclusion Criteria:

• history/presence of hypertension, diabetes mellitus, hyperlipidemia, cardiovascular disease, liver disease, gastrointestinal disease, thyroid disease, or any other acute or chronic diseases requiring treatment
• Use of any medication affecting body weight or energy expenditure for 1 month before screening