Deep research and expert guides on maintaining your visual health.
Caffeine, Coffee, and Tea: How Do They Impact Eye Pressure? Caffeine is one of the most widely consumed substances worldwide, found in coffee, tea, energy drinks and many soft drinks. Eye care patients often wonder if their morning coffee or tea could raise their intraocular pressure (IOP) or affect ocular blood flow. In general, a moderate dose of caffeine – roughly the amount in one or two cups...
Tea catechins are natural plant compounds found mainly in the leaves of tea plants, and they belong to a larger group called polyphenols. These molecules act as antioxidants, which means they help neutralize damaging particles in the body and reduce mild inflammation. Different kinds of tea have different amounts of catechins; for example, green tea usually has higher levels because its leaves are less processed. Researchers have studied catechins for possible benefits such as supporting heart health, helping metabolism, and protecting cells, although evidence varies and benefits are usually modest. Catechins also affect how the body absorbs certain nutrients like iron and can interact with some medications, so they are not simply harmless extras. Most people get catechins by drinking tea, and consuming them in that way is generally safe for moderate intake. Very large doses from concentrated supplements can cause side effects like stomach upset or, rarely, liver issues, so caution is advised. Overall, catechins are one reason tea is valued for its potential health-supporting properties, but they work best as part of a balanced diet rather than as a cure-all.
