['Repeated postprandial hyperglycemia and subsequent mild, late hypoglycemia as well as high postprandial insulin response lead to metabolic events that may eventually develop into type 2 diabetes. The aim of this study was to assess how sea buckthorn berries as well as two sea buckthorn extraction residues modulate the postprandial metabolism after a high-glucose meal.', 'Ten healthy normal-weight male volunteers consumed four study breakfasts, one control (A) and three sea buckthorn meals on four distinct study days. All the meals contained yoghurt and glucose (50\u2009g). The sea buckthorn ingredients used were dried and crushed whole berries (meal B1), supercritical fluid (SF)-carbon dioxide (CO(2))-extracted oil-free berries (meal B2) or ethanol-extracted SF-CO(2)-extraction residue (meal B3). Blood samples for glucose, insulin and tumor necrosis factor-α analyses were collected before and during the 6-h study period.', 'Meal B1 suppressed the postprandial peak insulin response when compared with meal A (Δconcentration of 30-min peak value--21.8\u2009mU/l, P=0.039), and stabilized postprandial hyperglycemia and subsequent hypoglycemia (Δconcentration of 30-min peak value--120-min value -30.4\u2009mU/l, P=0.036). Furthermore, meal B2 resulted in a more stable insulin response than the control meal (Δconcentration of 30-min peak value--120-min value -25.9\u2009mU/l, P=0.037).'] Are postprandial hyperglycemia and insulin response affected by sea buckthorn ( Hippophaë rhamnoides ssp . turkestanica ) berry and its ethanol-soluble metabolites?