Green tea's cognitive benefits for middle-aged and elderly Chinese people were confirmed in a study from Wuhan University (Zhang R, et.al., 2022).
Regular drinkers of green tea showed higher scores in memory and executive function tests, and lower indicators of Alzheimer's disease. It was found that these positive effects might be due to green tea's ability to reduce Alzheimer's-related pathology and enhance the body's antioxidative stress capacity.
The study concluded that higher levels of green tea cosumption could offer stronger protective effects against cognitive impairment mainly reflected in memory and executive function.
If you don’t like to drink green tea, you can take it in capsule form.
Ran Zhang 1, Lei Zhang 1, Zeng Li 1, Ping Zhang 1, Hao Song 1, Dong-Ai Yao 1, Jing Cao 1, Jun-Jian Zhang. Green tea improves cognitive function through reducing AD-pathology and improving anti-oxidative stress capacity in Chinese middle-aged and elderly people. Front Aging Neurosci. 2022 Aug 5;14:919766.
Green tea extract has been documented to lower blood pressure, reduce total cholesterol and LDL (the bad cholesterol), reduce serum amyloid-alpha (a marker of chronic inflammation) and reduce malondialdehyde (a marker of oxidative stress) (Nantz MP, et al. 2009). These are all cardiovascular risk factors and they were reduced in only 3 weeks.