Over time, your body’s stores of hyaluronic acid decline. Age is one reason, but environmental factors — such as smoking and air pollution — also accelerate this process. That’s the bad news. The good ...

Hyaluronic acid, an active ingredient in skin care products, is known for its hydrating abilities. Found in serums, cleansers, moisturizers, and more, hyaluronic acid not only moisturizes the skin, ...

Acid rain is a serious environmental problem occurring all over the world, particularly in large swaths of the United States and Canada. As the name suggests, it indicates precipitation that is more ...

Acid reflux is when acid from inside your stomach flows up into your esophagus and throat. At the entrance to your stomach is a valve, a ring of muscle called the lower esophageal sphincter (LES).