This PDQ cancer information summary for health professionals provides comprehensive, peer-reviewed, evidence-based information about stomach (gastric) cancer screening. It is intended as a resource to inform and assist clinicians who care for cancer patients. It does not provide formal guidelines or recommendations for making health care decisions.
Aromatherapy is the use of essential oils from plants (flowers, herbs, or trees) as therapy to improve physical, emotional, and spiritual well-being (see Question 1).
Patients with cancer use aromatherapy mainly to improve their quality of life, such as reducing stress and anxiety (see Question 1).
Essential oils like Roman chamomile, geranium, lavender, or cedarwood are the basic materials of aromatherapy (see Question 1).
Interest in aromatherapy grew in the late 20th century...
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be cited with text, or
replace or update an existing article that is already cited.
Changes to the summaries are made through a consensus process in which Board members evaluate the strength of the evidence in the published articles and determine how the article should be included in the summary.
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Levels of Evidence
Some of the reference citations in this summary are accompanied by a level-of-evidence designation. These designations are intended to help readers assess the strength of the evidence supporting the use of specific interventions or approaches. The PDQ Screening and Prevention Editorial Board uses a formal evidence ranking system in developing its level-of-evidence designations.
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