Overall, it is thought that the phenolic compounds present in sage are helpful in terms of having an antioxidant effect and reducing free radicals.2 Rosmarinic acid and carnosic acid are two compounds in sage that are particularly associated with an antioxidant effect.
Below are some of the purported benefits of using sage internally
reducing oxidative stress on the body
protecting against free radical damage
protecting against bacterial and viral infections
as a dietary supplement for digestion
sore throat relief
protecting against memory loss
reducing depression or improving mood
Benefits of Burning Sage
The purpose of burning sage differs slightly from the reasons for taking it internally. The burning of sage is a historical spiritual ritual also known as smudging.
Poor air quality may be linked to various health conditions. In this way, burning sage is seen as a cost-effective way to purify the air (to an extent). This is because sage is thought to have antimicrobial properties that help kill bacteria, viruses, and fungi. That being said, it's important to keep in mind that burning sage will create smoke, which can cause health problems for individuals who are prone to asthma and other respiratory conditions.
Just as with taking sage internally, Some practitioners of alternative medicine believe that burning sage can help to release so-called "negative energy". In addition to burning sage, some people use a cleansing spray in their homes.
Some of the purported benefits of burning sage include the following.
- removing bacteria from the air
- repelling insects
- improving intuition
- purifying specific objects
- improving mood and reducing stress and anxiety
Research on the Use of Sage for Mental Health
Overall, not enough research has been conducted on the use of sage for its proposed benefits as they relate to mental health. Because of this, there is not clear support for its use for any mental health condition. However, based on preliminary research, there may be support for the use of sage for the following mental health-related purposes." Read more and how to burn here https://www.verywellmind.com/the-benefits-of-burning-sage-4685244
And another nice article here