Aromatherapy: The Sense of Smell:
Essential oils work on the body on several different levels. The most obvious is by stimulating the powerful but little understood sense of smell. In recent years, medical research has uncovered what aromatherapists have always known; that the odors we smell have a significant impact on the way we feel.
"Smell act directly on the brain, like a drug," says Alan Hirsch, M.D., a neurologist, a psychiatrist and director of the smell and Taste Treatment and Research Center in Chicago.
In the course of treating patients who have lost the sense of smell, Dr. Hirsch has found that a life without fragrance seems to lead to a high incidence of psychiatric problems such as anxiety and depression.
And while most depressed, stressed-out people can smell just fine, Dr. Hirsch believes that their emotional states are also affected by the odors they are - or aren't - smelling.
Scientific research supports the notion that smelling particular odors has a direct effect on brain activity. "We know from brain wave frequency studies that smelling lavender increases alpha waves in the back of the head, which are associated with relaxation," says Dr. Hirsch. "An odor such as jasmine increases beta waves in the front of the head, which are associated with a more alert state."
And since most people can detect many different odor, the potential therapeutic uses of smell seem endless. Experts says that inhaling essential oils can benefit many conditions linked to nervous tension, including headaches,insomnia and anxiety. Inhalations are also used to treat respirator complaints such as colds, allergies and bronchitis.
Experiencing the mood-altering power of scent can be as simple as adding several drops of essential oil to your bath or placing a couple of drops of essential oil on a scent ring, which sits on a warm light bulb. A longer-lasting way to scent a room is with an aroma lamp, a porcelain or clay pot in which essential oils are mixed with water and heated over a candle, or an electric aromatic diffuser, which reduces essential oils to a fine spray and disperses the scent throughout the room. These are sold in some health food stores