Meal-study. Plasma levels of thyroid-stimulating hormone (TSH), thyroxine (T4) and thyroid hormone triiodothyronine (T3) during a 75 g-oral glucose tolerance test (OGTT) and three isocaloric (500 kcal) and isovolaemic (350 ml) liquid meals with low fat, medium fat and high fat, in healthy control subjects (n=15, closed symbols) and patients with type 2 diabetes (n=15, open symbols). Mean±s.e.m. values are shown.