Azelaic acid is a type of acid that's found in some grains like rye, wheat, and barley. It's naturally produced by Malassezia furfur (also known as Pityrosporum ovale), a yeast found on healthy skin.

Acid reflux happens when stomach contents flow back into the esophagus. Eating smaller meals helps prevent acid reflux symptoms. Avoiding smoking may decrease acid reflux frequency. Acid reflux, or ...

Thick black smoke billowed into the sky, making day seem more like night. Toxic rain mixed with oil fell from the air, while a central boulevard was lined by a wall of flame. Subscribe to read this ...

Jani Hall is a news editor for Health with a background in health and science journalism. Previously, she worked as a staff reporter for National Geographic. William Truswell, MD, FACS, operates his ...