Human cell toxicity and in vivo bioavailability of therapeutic essential oils-A review

Essential oils have been used extensively for bactericidal, fungicidal, anticancer, antidiabetic, insecticidal, therapeutic and cosmetic purposes for many years. They are also used in the alimentary, medication, agriculture, cooking and fragrance industries. The toxicity profile, bioavailability and the mode of biological action needs to be better understood for new applications in human health and agriculture. This review brings out how essential oils, which contain substances like eugenol, thymol, and 1,8-cineole, work at the cellular level to influence biology, especially in the prevention of diseases. The environment, due to the growing popularity of in vitro and in vivo, researches have established that essential oils of different plant species can successfully interact with human cells to produce advantageous outcomes like cell cycle arrest, apoptosis and modification of important signaling pathways. With the emphasis on the antioxidative qualities, cytotoxic effects on cancer cells and capacity to regulate inflammation, this review explores the bioavailability, biocompatibility and the potency of essential oils for therapeutic uses in human health. Notwithstanding these difficulties, the outcomes of in vitro research demonstrate the potential of essential oils as supplemental therapies in human healthcare, providing a safe and natural substitute for traditional treatments. Further, to verify the effectiveness and safety of essential oils in human subjects and to fully investigate their therapeutic potential, more clinical research and carefully planned trials are required.