Postprandial lipid metabolism will be evaluated in patients with hypertriglyceridemia and normo-lipidemic controls; different fats will be used (saturated fatty acids, mon-unsaturated fatty acids and medium chain fatty acids) for the oral fat challenge.

Inclusion Criteria:

• hypertriglyceridemia (150 mg/dl-900 mg/dl)

Exclusion Criteria:

• Lipid lowering drugs or indication for Lipid lowering drugs
• LDL-cholesterol > 190 mg/dl
• Diabetes mellitus