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.
Low-carb foods list . Foods to eat. Meat: Any type: Beef, pork, lamb, game, poultry, etc. Feel free to eat the fat on the meat as well as the skin on the chicken. If possible try to choose organic or grass-fed meats. Top recipes ; Fish and seafood: All kinds: Fatty fish such as salmon, mackerel, sardines or herring are great. Avoid breading.