A substance, both a hormone and neurotransmitter, secreted by the adrenal medulla and the nerve endings of the sympathetic nervous system to cause vasoconstriction and increases in heart rate, blood pressure, and the sugar level of the blood. Also called levarterenol, noradrenalin. norepinephrine.
Foods that only contain protein, fat or both -- and are carb-free -- are few and far between. Most foods contain at least some carbohydrates. However, plant-based oils, other pure fats -- like butter and margarine -- meats, poultry, seafood and eggs are the best sources of carb-free foods.
Bad. Almost all foods you eat contain some type of carbohydrate -- starch, sugar, fiber or a combination of those. Good carbs come from minimally processed whole foods. Examples include low-fat dairy, whole grains, beans, legumes, nuts, seeds, veggies and fruits.Youâll get starch, sugar or possibly a little fiber in heavily manufactured foods too.ood-carbohydrate starches in your diet should come from whole grains, vegetables, beans, seeds and nuts instead of from processed foods. Youâll still get starch from manufactured products, including white bread, chips, crackers and pasta.