Canker sores are common, affecting up to 50 percent of people during their lifetime.

A potent food and medicine, limes were used to treat and prevent scurvy in the 18th century.

Emerging research suggests rosacea, a chronic inflammatory condition affecting at least 16 million Americans, is more than just skin-deep.

This fat-soluble antioxidant supports the immune system, keeps blood running smoothly, fights free radicals, and facilitates cell communiciation.

In the United States, nearly one-quarter of individuals have insufficient or deficient vitamin D blood levels, which can impact bone and overall health.

Mast cells release chemical mediators to coordinate protection against infection or promote wound healing. Some of the mediators can cause allergy symptoms.

Sickle cell disease is the most common inherited blood disorder in America.