精油是（Essential oils）从植物中提取的浓缩液体，包括草药和水果。常见的精油包括柠檬、薄荷和薰衣草，市场上至少有几十种精油。它们已经存在了几个世纪，并且经常用于食品和其他产品中，以增加风味，散发令人愉悦的气味。
最近，由于人们对替代药物的兴趣增加，香精油营销公司（如Doterra和Young Living）的兴起，香精油的受欢迎程度有所上升。
图源：百度图片
许多网上的健康声明都是关于香精油的，而这些香精油并没有受到FDA的监管。由于美国监管松懈，这是一个买家应当心市场上类似的其他流行替代疗法，如CBD油和顺势疗法。 总的来说，几乎没有临床证据表明精油对医疗有益，包括听力损失、耳鸣、眩晕或耳部感染。如果你用精油来做这些东西的话，一定要小心。 Essential oils are concentrated liquids taken from plants,including herbs and fruits.Common essential oils include lemon,peppermint and lavender,but there are dozens,if not hundreds,of essential oils.They've been around for centuries,and are frequently used in food and other products to add flavor or a pleasing scent. Recently,essential oils have seen an uptick in popularity thanks to increased interest in alternative medicine and the simultaneous rise in multi-level marketing companies,such as DoTerra and Young Living,that sell essential oils. Many online health claims have been made about essential oils,which are not regulated by the FDA.Due to lax regulations in the US,it's a buyer-beware market—similar to the markets for other popular alternative therapies,such as CBD oil and homeopathy. Overall,there's very little clinical evidence that shows medical benefits of essential oils,including for hearing loss,tinnitus,vertigo or ear infections.Be cautious if you use essential oils for any of these health conditions. Contributed by Joy Victory,managing editor,Healthy Hearing August 26,2019 来源：张华医师听力师，Joy Victory
