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Aromatherapy is the use of essential oils as possible therapy for various symptoms or conditions. Essential oils are the volatile and fragrant oils of plants (flowers, herbs, or trees). Those that are used for aromatherapy are extracted in natural ways, such as by distillation with steam and/or water, or by mechanically pressing the plants. Oils that are chemically processed are not considered true essential oils. Each type of oil has a different chemical composition, which affects how it smells, how it is absorbed, and how it is used in the body. Oils of the same variety of plant also can have different chemical compositions that vary by the location of harvest. Aromatherapy is one of the fastest growing of all the complementary and integrative therapies ...

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