The purpose of this study is to determine by how much, the ingestion of palm sugar increases blood glucose concentrations and what the corresponding glycaemic index is. The investigators estimate that the glycaemic index will be 68 (equal to that of sucrose).

Inclusion criteria:

• Healthy: as judged by the participant;
• Age: 18 to 35.

Exclusion criteria:

• Pregnant or lactating females
• Presence of a chronic disease such as diabetes, illness, dysmetabolic syndrome
• 18.5 < BMI < 25
• Allergy or intolerance to palms or coconuts
• Weight loss or gain of more then 5 kg in the last two months
• Fasting blood glucose levels <100 mg/dl or 5.6 mmol/l
• Smokers
• Use of medications other then birth control
• Previous problems with blood sampling