Coffee (image) American Chemical Society Share Print E-Mail Caption Dark-roasted coffee contains substances that reduce stomach acid. The finding could lead to a new generation of brews that are gentler on the tummy. Credit The American Chemical Society Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.