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.
Chicken breasts and thighs contain no carbohydrates. This makes both versions good additions to your meal plan if you are following a low-carb diet. If you were to marinate the chicken in a sweet liquid, such as barbecue sauce, honey or maple syrup, the carb content would go up.