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.
2. Black. Black tea is one of the most highly caffeinated varieties of tea, with about 40 milligrams of caffeine per cup. Black tea also contains thearubigins and theaflavins, two types of antioxidants that have been linked to lower cholesterol levels.