Chemoprevention Effect Of Tea Against Neuronal Death-Dementia

It has been thought that the number of Alzheimer's disease patients is higher in Western nations, whereas patients with vascular dementia-type diseases are more common in Japan. An epidemiological study in Japan has shown that the incidence of stroke was significantly lower in people who consume more than five cups of green tea per day. The green tea chemical component theanine showed a neuroprotective effect in transient ischaemic neuronal death. Tea catechins are acknowledged to have radical scavenging actions and preventive effects against arteriosclerosis. Thus, the neuroprotective effects of tea catechins may be inferred, and the preventive effects of green tea consumption on dementia are presently the focus of considerable attention.