Mucus protects our body by trapping bacteria and particles. The color and texture of your mucus can give clues about your ...

This colored mucus is usually harmless, but it can be a sign of lingering inflammation. Black nasal discharge is rare and can indicate a more serious problem such as a fungal infection ...

And the color and consistency of nasal mucus can reveal intriguing details about your immune system, and how your body responds to illnesses. Mucus is produced by the tissues lining our nasal ...