Oregano essential oil has many health benefits that include treatment of parasitic and fungal infections, strengthening the immune system, and improving digestion. It can help balance hormones and lessen the symptoms of menstruation, aid in weight loss efforts, and even minimize the severity of allergic reactions. The benefits of oregano essential oil can be attributed to its antiviral, antibacterial, antifungal, antiparasitic, antioxidant, anti-inflammatory, and digestive properties.