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...
Coffee consumption means how often and how much a person drinks coffee, including brewed coffee, espresso, and coffee-flavored drinks. Coffee contains caffeine and other compounds that affect the brain, heart, digestion, and metabolism, so drinking it influences alertness, mood, and energy. For many people a cup of coffee improves focus and reduces drowsiness, while regular drinking can become part of daily routines or social habits. Studies show both benefits and drawbacks: moderate intake is linked with lower risk of some diseases and better daytime performance, but too much can cause jitteriness, sleep trouble, or raised heart rate. Individual responses vary widely—some people tolerate several cups a day without issues, while others feel anxious or cannot sleep after a single serving. Because coffee delivers a caffeine boost, timing and quantity matter, especially before bedtime and for people sensitive to stimulants. Choosing decaffeinated coffee, limiting intake, or avoiding it late in the day are simple ways to reduce unwanted effects. If you have health concerns or take medications, discuss your coffee habits with a clinician who can help balance benefits and risks.
