Tag: Feno

According to scientific guidelines, consuming caffeine may lead to a transiently altered fractional exhaled nitric oxide (FeNO) value, and evidence suggests that coffee may actually decrease these levels, rather than increase them. This counterintuitive finding has significant implications for patients undergoing FeNO testing for conditions like asthma. Knowing the real impact of coffee is crucial for ensuring accurate test results and proper clinical management.

Medical test results can be significantly influenced by dietary intake, and FeNO measurements are no exception. The question of **how does coffee affect FeNO?** yields conflicting evidence in medical literature, with some studies suggesting a decrease while others find no significant acute change.