An Ayurvedic herb called ashwagandha is proven for natural healing. This herb has been used in the traditional medicine for hundreds of years. It is beneficial in improving concentration, reducing stress levels and increasing energy levels. The leaves or roots of plant is used to make ashwagandha powder. Diabetics can consume this powder to reduce blood sugar levels. Those who consume this powder regularly are known to have better memory and can quickly process information. The ashwagandha powder also improves sleep.