According to Reuters on February 6th, a Japanese study showed that elderly people who regularly drink green tea have longer-term flexibility and independence than other elderly people.
The study was published in the American Journal of Clinical Nutrition. Yasutake Tomata of Tohoku University School of Medicine and his colleagues tracked nearly 14,000 elderly people aged 65 and over for three consecutive years.
They found that people who regularly drink green tea are least likely to have problems with “functional disorders,” or basic needs such as daily activities and bathing.
Specifically, about 13% of adults who drink less than one cup of green tea a day have a functional disorder, and more than 7% of those who drink at least five cups of green tea a day have a functional disorder.
“Drinking green tea is highly associated with a significant reduction in the risk of developing a functional disorder, even if possible complications are considered,” wrote Tomata and colleagues.
The study does not prove that green tea is the only factor. Most green tea lovers have healthier eating habits, more fish, vegetables and fruits, higher levels of education, lower smoking rates, fewer heart attacks and strokes, and more flexible minds.
Although a small amount of green tea and its extracts are considered safe, they still contain caffeine and a small amount of vitamin K, which may interfere with the efficacy of anticoagulants.