According to a new study from the National Eye Institute, US, the risk of developing glaucoma, a common eye disease in senior people, was lower in those who drank hot tea on a daily basis.
A team of scientists analyzed data received from the 2005–2006 National Health and Nutrition Examination Survey, which included the medical data of nearly 10,000 people. Having analyzed the received data, the researchers discovered that the participant who drank hot tea every day had 74% lower risk of developing glaucoma.
However, the team concluded that further research is needed to establish the importance of these findings and whether hot tea consumption may play a role in the prevention of glaucoma.
A team of researchers from Macquarie University, Australia, has found that a natural protein called neuropepsin plays a key role in retinal health but this protein is inactivated in glaucoma.
The researchers performed an analysis which demonstrated that neuropepsin is deactivated in response to oxidative stress that could be triggered by environmental factors like air pollution.
Lead author of the study Dr. Vivek from the Faculty of Medicine and Health Sciences at Macquarie University Gupta believes: “This long-term collaborative study has opened up a completely new line of investigation in glaucoma research that will lead to new treatment avenues for the disease.”
A recent research finds that eating a Mediterranean diet and drinking coffee may lower the risk of developing age-related eye disease (age-related macular degeneration, or AMD), one of the leading causes of blindness.
In the study, 883 people aged 55 and older participated in the study. The researchers assessed their diets with the help of questionnaires. 449 people had early stage of AMD and 434 didn’t have eye disease. Following Mediterranean diet was associated with a 35% lower risk of AMD.
Also, the researchers found that people who consumed high level of caffeine seemed to have a lower risk of AMD. Among those who consumed high levels of caffeine (around 78mg of coffee per day, or one shot of espresso), 54% did not have AMD and 45% had the disease.
Researchers from Buck Institute for Research of Aging boosted the potency of a broccoli-related compound by 10 times and identified it as a potential treatment for age-related macular degeneration (AMD), which is the leading cause of loss of vision in many people.
This research also highlights the role of lipid metabolism in maintaining the health of the retina, saying that palmitoleic acid also had protective effects on retinal cells in mice.
The broccoli compound is called indole3-carbinol (I3C), which is also being studied for cancer prevention.
This compound helps clear cells of environmental toxins by activating the aryl hydrocarbon receptor (AhR) protein which upregulates pathways involved in chemical detoxification. This protein, declining with age, is important for detoxifying the retina.