[PHNUTR-L] Drinking Tea Exerts Beneficial Effects on Bone Structure in Elderly Women

[Kathrynne Holden]

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Drinking Tea Exerts Beneficial Effects on Bone Structure in Elderly Women
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Reference: 	"Tea drinking is associated with benefits on bone density in 
older women," Devine A, Hodgson JM, et al, Am J Clin Nutr, 2007; 86(4): 
1243-7. (Address: Devine, Nutrition Program, School of Exercise, 
Biomedical and Health Science, Edith Cowan University, 100 Joondalup 
Drive, Joondalup WA 6027 Australia. E-mail: a.devine at ecu.edu.au ).
Summary: 	In a study involving a cross-sectional analysis of the 
relation between tea intake and hip structure and a prospective analysis 
of the relation between tea intake and hip structure over 4 years of 
follow-up, results indicate that tea drinking (black tea and green tea, 
but not herbal tea) exerts beneficial effects on bone structure by 
reducing bone loss in elderly women. In a cross-sectional analysis 
involving 1,027 women aged 70-85 years, usual tea intake was assessed by 
using a questionnaire, and hip structure was assessed by dual-energy 
X-ray absorptiometry (DXA) areal bone mineral density (aBMD). Total hip 
aBMD was 2.8% greater in tea drinkers than in non-tea drinkers. In a 
prospective analysis involving 164 elderly women, the relation of tea 
intake at baseline with change in aBMD over a 4 year period was 
assessed. After 4 years, tea drinkers showed an average loss of 1.6% of 
their total hip aBMD, compared to baseline, whereas non-tea drinkers 
showed an average loss of 4.0% of their total aBMD, compared to 
baseline. Thus, the authors of this study conclude, "Tea drinking is 
associated with preservation of hip structure in elderly women. This 
finding provides further evidence of the beneficial effects of tea 
consumption on the skeleton."
-- 
Kathrynne Holden, MS, RD < fivestar at nutritionucanlivewith.com >
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