Can consumption of tea be good for memory as a person grow older?

Many research studies had been carried out to find whether tea components could improve the cognitive function (all mental abilities and processes related to knowledge, which includes; attention, memory, judgment and evaluation, reasoning, problem solving and decision making, comprehension etc.). These studies have found that tea components especially caffeine and theanine could improve the cognitive function. Further, research studies have shown that tea components may have beneficial effects on Alzheimer’s disease which is a prevalent disease of the elderly.