Burdock root has been used as food and medicine for centuries in various ways, including as a diuretic to aid digestion. It comes from the plant burdock (arctium lappa) that is related to daisies and sunflowers. It’s native to North Asia and Europe, but is grown in other parts of the world, including North America. 
The roots of the burdock plant are believed to be the most beneficial part of the plant. While scientific research is limited at this time, burdock root contains a variety of nutrients such as antioxidants and inulin that are known to help with conditions like skin disorders, inflammation, digestion, and more.      
Health Benefits
Burdock root is often eaten, yet, can also be dried and steeped into tea. It works well as a source of inulin, a prebiotic fiber that aids digestion and improves gut health. Additionally, this root contains flavonoids (plant nutrients), phytochemicals, and antioxidants that are known to have health benefits. 
In addition, burdock root can provide other benefits like:
Reduce Chronic Inflammation
Burdock root contains a number of antioxidants, such as quercetin, phenolic acids, and luteolin, which can help protect your cells from free radicals. These antioxidants help reduce inflammation throughout the body. 
One study found that burdock root tea helped improve inflammation and oxidative stress markers in 36 participants with knee osteoarthritis. Yet, more research on the potential anti-inflammatory properties of burdock root is needed.  
Slow or Prevent Some Cancers 
The flavonoids and polyphenols in burdock root may help slow tumor development as well as reduce pain experienced from some cancers, such as breast tumors. A laboratory study in 2011 found that the free radicals in burdock root helped stop some cancers from spreading. However, additional research is needed, as there is insufficient evidence for the use of burdock root as a cancer treatment.
Help with Skin Conditions
Burdock root’s anti-inflammatory and antibacterial components may help different skin conditions, like wrinkles, eczema, acne, and psoriasis when applied topically. A small observational study found burdock may help with inflammatory types of acne.