Data Management And Sharing System of China National Clinical Research Center for Neurological Diseases

Journal：BMC geriatrics

Publication type: Article

IF(IF): 3.921

PMID: 33148194 Link To Pubmed Full text Download

Tea is a beverage widely consumed around the world. Experimental and animal studies demonstrated that tea polyphenols might have neuroprotective activity and be useful for neurodegenerative disease therapy in the future[1, 2]. In recent years, researchers have suggested that tea consumption is linked to a lower risk of cognitive disorders[3, 4], whereas others held inconsistent results[5, 6]. Importantly, the relationship between habit, frequency, or types of tea consumption and cognitive function enrolled the middle-age population has not been investigated. Therefore, this study was designed to clarify the association of habit, frequency, and types of tea consumption with incident cognitive impairment among adults over the age of 40.

We collected information on tea consumption via a standardized questionnaire. People were asked to report the habit, the average frequency and the type of tea that they consumed in the past 5 years. The habit is divided into “never” and “habitual”. For the frequency of tea consumption, we provided 5 choices, including “never”, “less than once/month”, “1-3 times/month”, “1-3 times/week” and “≥ 4 times/week”. The type of tea consumption included “never”, “green tea”, “black tea” and “other types”. Cognitive function was measured by MMSE and/or MoCA. Logistic regression analysis was used to assess associations between habit, frequency and types of tea consumption and cognitive function.