Since ancient times, aromatic oils have been used by people both to obtain pleasant smells and to treat certain diseases, as well as in cosmetic products.. Some of the aroma oils are widely used in therapies to help relieve tension, the effects of stress, and to relax.. However, recent studies have shown that essential oils are often not able to provide a healing effect at all, and in addition, they can be harmful to health.. These are the conclusions reached by Taiwanese experts from the Jia-Nan University of Pharmacy and Science..

Earlier, British experts have already reported about the low healing properties of various aroma oils.. They reported that currently there is not enough scientifically supporting data on the ability of aromatic oils to strengthen the immune system, suppress inflammation, and also have a positive effect on the emotional state of a person..

Researchers from Taiwan were able to scientifically prove that the released organic compounds from various aromatic oils can not only irritate the nose, throat and eyes, but also often cause headaches, nausea, kidney damage, and even lead to a nervous breakdown, accompanied by hallucinations. The results of these studies were published in Environmental Engineering Science..

Another study by a group of scientists from Germany, Japan and South Korea confirmed that inhaling the concentrated aromas of coffee beans, lemon fruit, vanilla and some herbs for just 30 minutes could cause headaches in more than 2,000 out of 4,300 people.. And nearly 1,000 people reported increased nervousness and irritability..

Scientists from Northwestern University (USA) also reported on the negative effect of aromatic oils on the human brain.. Experimentally, they established the ability of odors to cause disturbances in sleep, taste, as well as the work of the entire nervous system for a long time.

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