A lumbar sympathetic nerve block is a special test to help your doctor find the cause of your symptoms. During the test, an anesthetic (numbing) medication is injected near your spine. This âblocksâ the sympathetic nerves in that region.
Lutein is an antioxidant carotenoid a pigmented nutrient that is responsible for the yellow colors of fruits and vegetables and is present in the highest quantities in dark, leafy green vegetables. You're born with a certain amount of lutein in your eye, but your body doesn't reproduce it.
By common usage, stein refers to a beer container with a handle and hinged lid. Bierstein in German means beerstone â i.e., beer scale â a hard residue of calcium oxalate, protein, and sugar formed when a brewing vessel is used repeatedly without exacting cleaning.