Lemongrass oil is a popular tool in aromatherapy to help relieve stress, anxiety, and depression. This oil effective against a variety of drug-resistant bacteria, including those that- cause: Skin infections, pneumonia, blood infections, and serious intestinal infections. High cholesterol may increase your risk of heart attack and stroke. It's important to keep your cholesterol levels stable. It may help regulate blood sugar and lipids and also help relieve headaches and migraines.