Sage is a powerful herb from the mint family, and has been used for centuries to treat pain, heal viruses and infections, help the body create new blood vessels, help manage menopausal symptoms, reduce inflammation, and protect against oxidative stress. Scientific studies have shown that sage has medicinal abilities to treat major diseases like obesity, depression, cardiovascular disease, dementia, Alzheimer's, diabetes, and autoimmune disease. 

When used as a tea, sage has been known to help with digestive problems, bronchitis, asthma, cough, circulation problems, angina, mouth and throat problems, depression, excessive sweating, and skin diseases. When used as an essential oil, it supports the nervous system, cardiovascular system, respiratory system, digestive system as well as metabolic system and endocrine system.

Sage is often burned to "clean the atmosphere" of unclean spirits. Burning sage does not get rid of demons, it actually attracts them. I do not recommend burning sage.