Caffeine causes anxiety in high doses. It is well-known that caffeine can cause or aggravate anxiety. The Mayo Clinic’s current stance on caffeine is that 500-600mg of caffeine daily can cause a number of serious health problems, including anxiety. Four strong cups of coffee can put a person over this limit, but it must be emphasized that people differ greatly in their sensitivity to caffeine: some people can drink more coffee without suffering from anxiety, whereas others may encounter stressful symptoms even at lower amounts. People who have serious anxiety problems are recommended to avoid or minimize their caffeine intake.
Coffee is very high in caffeine. This alone is not reason to avoid it entirely, but. How much caffeine is in a typical cup of coffee? This varies both based on the type of coffee, the level of roast, how strongly it is made, and how it is brewed. Although the amount ranges widely, a typical 8 ounce cup of coffee contains between 85 and 135 milligrams of caffeine. Keep in mind that many people, especially those purchasing coffee in coffee shops, regularly consume larger sizes. A 12-ounce size, by comparison, would contain from 127 to 202 milligrams.