Your daily hot cuppa may hold another surprising health benefit

17 December, 2017, 00:58 | Author: Wilson Dawson
  • A daily cup of hot tea may lower glaucoma risk

It damages the optic nerve by forming a fluid pressure inside the eye.

Your morning cup of tea may have more power than you thought.

People who drink a cup of hot tea at least once a day are 74 per cent less likely to be diagnosed with glaucoma - a severe eye problem that can lead to permanent vision loss.

Currently, Glaucoma effects 57.5 million people worldwide, as per reports, and the count is expected to surge to 65.5 million by 2020.

Although prior research indicated that caffeine has the ability to alter intraocular pressure, a study comparing the possible impact of caffeinated and decaffeinated drinks on glaucoma risk has yet to be carried out.

The researchers looked at data from a National Health and Nutrition Examination Survey (NHANES) in the US. The nationally representative annual survey of several USA adults and children is based on interviews, physical examinations, and blood samples of all the participants. There was no significant correlation between glaucoma and consumption of caffeinated and decaffeinated coffee, iced tea and soft drinks, and glaucoma.

Wilmer Eye Institute ophthalmologist, Dr Mary Qiu, said future studies should address the potential role of glaucoma screening and hormone replacement therapy in women undergoing ovary removal. That year, 1,678 participants agreed to share full eye test results, and of these, 84 adults were found to have a form of glaucoma.


As part of the research, participants were asked how often they drank a variety of drinks including tea, coffee and fizzy drinks throughout the year.

The data indicated that those who drank hot tea daily had a lower glaucoma risk than those who did not.

However, the researchers noted that this was an observational study, and therefore, no firm conclusions can be drawn about cause and effect.

"This study is limited by its cross-sectional design and use of multiple statistical testing, and larger prospective studies are needed to investigate the proposed association between tea consumption and decreased glaucoma risk", the authors write.

Professor Chris Hammond of King's College London, said: "These results are interesting and add to the increasing consensus that tea contains antioxidants and other compounds that are good for our health".

Other missing information refers to how much of the beverage the hot tea drinkers actually had each day, what kind of tea they consumed, and how it was brewed, which may have swayed the findings.

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