Medicine
Lichens have been used in traditional medicine to treat a variety of conditions, including wounds, skin disorders, respiratory issues, and digestive issues. Lichens contain secondary metabolites and storage carbohydrates that have health benefits, such as anti-cancer, anti-inflammatory, anti-oxidative stress, and anti-diabetes properties..
Environmental monitoring
Lichens can be used to monitor the air quality of an area. Because they absorb nutrients from the atmosphere, they accumulate particles and elements in their tissue. By analyzing lichen samples, scientists can learn about the quality of the air on a molecular level. Lichens can also indicate the levels of nitrogen pollution in an area. Some lichens thrive in nitrogen pollution, while others die in its presence.