Interesting article over at WebMD
May 16, 2008—A cup of green tea may be just what the doctor ordered if you have learning and memory problems related to obstructive sleep apnea, the most common type of sleep-related breathing disorder.
Obstructive sleep apnea (OSA) starves the body of oxygen during sleep. Persons with the condition experience pauses in breathing while sleeping. This condition can cause a drop in oxygen levels, which can affect organs of the body. OSA increases your risk for high blood pressure, heart attacks, and strokes, and affects cognitive function such as learning and memory.
Full text here
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