FRIDAY, December 15, 2017 – A hot tea patch in the afternoon may help you save your sight, new research suggests.
The American adult study found that people who drank hot tea daily were 74 percent less likely to have glaucoma, compared to those who were not tea-loving.
Experts were quick to emphasize that it may not be tea that prevents eye disease. There could be something more about tea lovers that reduces risk, said lead researcher Dr. Anne Coleman.
But the findings raise a question that should be studied more thoroughly, according to Coleman, professor of ophthalmology at the University of California. , The Angels.
"It's interesting," he said, "it was just hot tea with caffeine that was associated with a lower risk of glaucoma."
Decaffeinated tea and ice tea were not related to the disease. Neither coffee, caffeinated or not.
It's hard to say why, according to Coleman. "Is there anything about the lifestyle of people who drink hot tea?" she said. "Do you exercise more, for example? We do not know."
Glaucoma refers to a group of diseases where fluid accumulates in the eye, creating pressure that damages the optic nerve. It is a leading cause of blindness in older adults, according to the American Academy of Ophthalmology.
Some people face a higher risk than others, says the AAO: they include blacks, people with a family history of glaucoma, and people with high blood pressure, diabetes, or other conditions that affect blood circulation.
Some studies have suggested that people who drink a large amount of coffee have an increased risk of glaucoma. Others have hinted that caffeine can temporarily increase the pressure inside the eye.
On the other hand, some studies have not been able to find a coffee-glaucoma link, Coleman said.
Your team decided to see if there was any connection between them. glaucoma and not just coffee, but tea or soda – caffeinated or not. The researchers then turned to data from a nationally representative government study where American adults underwent eye exams and completed nutrition surveys.
Of almost 1,700 participants in the survey, 5 percent had glaucoma.
Overall, Coleman's team found, the chances of having glaucoma was 74 percent lower among people who said they drank hot tea more than six times a week, compared to non-drinkers.
That was with a number of other factors considered, such as age, weight, diabetes and smoking
. Still, it's impossible to conclude that tea, in itself, deserves credit, Coleman said.
Other lifestyle factors may be at work, he explained. And with diet, Coleman said, it's always difficult to untangle the effects of a single food or nutrient from the rest of a person's eating habits.
That said, he pointed out some theoretical reasons why tea might be beneficial. It contains a range of plant chemicals that can fight inflammation and protect the body's cells from accumulated damage.
The findings were published online December 14 in the British Journal of Ophthalmology.
For now, Coleman recommends focusing on some proven steps.
"The first important step is not to take the eyes for granted," he said. "Go to that complete eye exam."
Dr. Davinder Grover, a clinical spokesperson for the AAO, agreed.
He said that people should undergo an "initial" ophthalmologic examination with an ophthalmologist at the age of 40, a time when early signs of eye disease may begin to appear. 19659002] Some people may need to start earlier, Grover noted, such as those with relatives who developed early glaucoma, between the ages of 40 and 50.
Regarding prevention, there is no sure way to prevent glaucoma. But people can curb the risk by worrying about their overall health, their cardiovascular health, in particular, he said.
"So, if you have diabetes or high blood pressure, try to control that," Grover said.  Coleman emphasized another point: even when glaucoma is already present, it can be treated, for example, with drugs to drown the eyesight or laser surgery. That can prevent damage to the optic nerve and loss of vision.
However, damage to the optic nerve is not reversible, Grover said. Therefore, early detection and treatment are vital.
"The name of the game is prevention," Grover said. "If we catch glaucoma early and treat it properly, the vast majority of the time, we win."
The AAO has more information about glaucoma.
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