Why do medical practitioners question some claimed health effects of aromatherapy?

Mainstream medical practitioners often question the claimed health benefits of aromatherapy because they doubt the existence of independent physiological effects resulting from the use of essential oils. Instead, many experts suggest that the perceived benefits are more likely the result of conditioned responses that odours can help create or reinforce.1

Furthermore, medical professionals note that the essential oils and solutions utilized in these practices are not standardized, which complicates the assessment of their efficacy. While these substances may have certain effects, the lack of consistency in their composition and application leads to skepticism regarding their therapeutic claims. Additionally, practitioners highlight that the use of these oils carries potential risks, such as allergic reactions.1