Symptoms of a choline deficiency may possibly include: 1  low energy levels of fatigue. 2  memory loss. 3  cognitive decline. 4  learning disabilities. 5  muscle aches. 6  nerve damage. 7  mood changes or disorders.
Black teas are fully oxidized teas. Black teas brew a liquor from reddish brown to dark brown. They are the most popular type of tea in the Western world. Black teas range from 40 â 60 milligrams of caffeine per 8 oz cup.
1 Green tea has a more delicate taste than black tea. The oolong teas are a combination of green and black tea. 2  Non-herbal teas contain varying amounts of caffeine and antioxidants. 3  Non-herbal teas are made from leaves of tea plants.  The longer the oxidation time (fermenting) of the leaf, the higher the caffeine level.