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 Non-herbal teas are made from leaves of tea plants. 2  The longer the oxidation time (fermenting) of the leaf, the higher the caffeine level. 3  The brewing time, size of the leaf, and type of tea leaf can also influence how much caffeine is in the tea.  Decaf versions of non-herbal teas still contain a bit of caffeine.