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Tea and coffee consumption may protect against urinary stone formation, finds study
A recent study has reported that regular use of tea and coffee can reduce the chances of urinary stone formation.
Nephrolithiasis is a complex disease with multiple factors associated to its development. Dietary modifcation is key to prevent stone formation and recurrence and Large epidemiological studies previously demonstrated a protective role in general, for both cofee and tea against urinary stone formation. This has been generally attributed to the diuretic efects of cafeine, the presence of antioxidant components in tea, and the additional fuid volume intake, mainly for tea consumption.
With the aim to explore the mechanisms behind the potential protective effect of coffee and tea consumption, regarding urinary stone formation, previously demonstrated in large epidemiological studies, Yazeed Barghouthy et al undertook a study .
The study design consisted of a systematic review performed using the Medline, Cochrane library (CENTRAL) and Scopus databases, in concordance with the PRISMA statement. English, French and Spanish language studies, regarding the consumption of caffeinated and decaffeinated coffee and tea, and the relationship to urinary stone formation were reviewed. Meta-analyses, systematic reviews, case reports and letters, unpublished studies, posters and comments abstracts were excluded.
On data analysis the following results emerged.
- As per the inclusion criteria, 13 studies were included in the final review.
- The major findings show that caffeine increases urinary excretion of calcium, sodium and magnesium, in addition to a diuretic action with consumption > 300–360 mg (approximately four cups of coffee).
- Together with other components of coffee, this beverage might have potential protective effects against the formation of urinary stones.
- Tea exerts many protective effects against stone formation, through the accompanying water intake, the action of caffeine and the effects of components with antioxidant properties.
"Caffeine has a hypercalciuric effect, balanced partially by a diuretic effect which appears after consumption of large quantities of caffeine. The current available literature supports in general, a potentially protective role for tea against stone formation, mainly for green tea. Additional standardization in this field of research, through specification of tea and coffee types studied, and their respective compositions, is needed for further clarification of the relation between coffee, tea and urinary stones."the team concluded.
For the full article click on the link: https://doi.org/10.1007/s00345-020-03466-8
Primary source: World Journal of Urology
Dr Satabdi Saha (BDS, MDS) is a practicing pediatric dentist with a keen interest in new medical researches and updates. She has completed her BDS from North Bengal Dental College ,Darjeeling. Then she went on to secure an ALL INDIA NEET PG rank and completed her MDS from the first dental college in the country – Dr R. Ahmed Dental College and Hospital. She is currently attached to The Marwari Relief Society Hospital as a consultant along with private practice of 2 years. She has published scientific papers in national and international journals. Her strong passion of sharing knowledge with the medical fraternity has motivated her to be a part of Medical Dialogues.
Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751