Tea consumption and mortality in the oldest-old Chinese

Area of Science:

• Gerontology
• Epidemiology
• Nutritional Science

Background:

• The oldest-old population (aged 80+) is rapidly growing globally.
• Understanding lifestyle factors influencing longevity in this demographic is crucial.
• Tea consumption is a prevalent habit in many Asian cultures, including China.

Purpose of the Study:

• To investigate the association between tea consumption and mortality risk.
• To examine this relationship specifically in the oldest-old Chinese population.
• To determine if habitual tea drinking impacts longevity in advanced age.

Main Methods:

• Utilized population-based longitudinal data from the Chinese Longitudinal Healthy Longevity Survey (CLHLS).
• Analyzed data from 9,093 participants aged 80 and older, with baseline data from 1998.
• Employed Cox semiparametric proportional hazard models to assess mortality risk.

Main Results:

• Tea consumption was significantly associated with a lower risk of mortality in the oldest-old Chinese.
• Daily tea drinkers showed a 10% lower risk of mortality (HR=0.90, 95% CI=0.84-0.96) compared to non-drinkers.
• Consistent results were observed when analyzing tea drinking habits at age 60 and in later life.

Conclusions:

• Tea consumption is associated with reduced mortality risk in the oldest-old Chinese.
• Habitual tea drinking may contribute to increased longevity in advanced age.
• Findings highlight the potential health benefits of tea for elderly populations.