Tea consumption and bone health in Chinese adults: a population-based study

Area of Science:

• Nutritional Science
• Bone Health Research
• Epidemiology

Background:

• Tea consumption's effect on bone health is debated, with limited understanding of sex-specific associations.
• Previous studies suggest potential benefits in postmenopausal women, but effects in men and risks of stronger tea remain unclear.

Purpose of the Study:

• To investigate the association between tea consumption metrics and bone health.
• To explore sex-specific differences in the relationship between tea intake and bone mineral density.

Main Methods:

• Utilized data from 20,643 participants in the China Kadoorie Biobank (CKB) with baseline and re-survey data.
• Assessed tea consumption via self-report and measured bone mineral density (BMD) using calcaneal quantitative ultrasound.

Main Results:

• Prolonged weekly tea consumption in women correlated with higher calcaneus BMD measures.
• No dose-response benefit was observed with increased tea leaves; very strong tea showed no significant BMD effects.
• Tea consumption was not associated with calcaneus BMD in men.

Conclusions:

• Prolonged moderate tea intake positively impacts bone health in women.
• Tea consumption showed no significant association with bone health in men.
• Neither benefit nor harm was observed for stronger tea consumption in this study population.