Nettle leaves and nettle roots have many medicinal properties. Nettle leaves are brewed as tea, which is rich in nutrients and has many healing properties. Nettle oil can also be used for local use of this plant.A couple of clinical trials have explored nettle extracts on different aspects of type 2 diabetes. One study found significant reductions in inflammatory markers, while another found improvements in blood sugar (Namazi 2011, Kianbakht 2013). A further study found improvements in antioxidant defenses with stinging nettle in diabetic patients (Namazi 2012).