apneaAccording to research appearing in the American Journal of Respiratory and Critical Care Medicine (2008 May 15;177(10):1135-41), green tea may help protect the brain during sleep apnea. This was an animal study. For two weeks the researchers deprived 106 rats oxygen. Half of the oxygen-deprived rats received a green tea extract, the other half did not. In memory tests, the oxygen-deprived rats that received the green tea extract out performed rats that did not receive the extract. Oxidative stress markers were higher in the untreated rats. The authors extrapolated this to sleep apnea, where the brain is deprived oxygen during sleep. They came to the conclusion that green tea extract may play a role in preventing neurocognitive deficits from the hypoxia associated with sleep apnea.