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.
Caffeine in Tea. Many people believe that tea is less 'intensive' in caffeine levels than coffee. This couldn't be further from the truth. Your average cup of tea contains 85mg of caffeine. Green tea is close behind with 60mg of caffeine, followed by white tea with 55mg. Your best bet if you want tea with a lower caffeine content is Oolong tea, with 35mg.