Sloppy science masquerading as a “systematic review” of adverse effects in aromatherapy

by Tamara Agnew PhD, Robert Tisserand, and Christine Carson PhD, with thanks to Kandace Knudson PhD for her input Introduction In 2012, Posadzki, Alotaibi and Ernst published a systematic review, which “was aimed at critically evaluating the evidence regarding the adverse effects associated with aromatherapy” (Posadzki et al, 2012). However, it is an article awash

July 24th, 2018|

Cats and essential oil safety

Myrtle by Robert Tisserand This is an updated version of an article published here. Some quite strong feelings and opinions have been expressed about essential oils and cats, and a frequently asked question is “Is it safe to diffuse essential oils around cats?”. Diffusing essential oils can be toxic to humans if it’s over-done, causing neurological

January 10th, 2018|

Risk vs. benefit: using potent antimicrobial essential oils with children

by Lauren Bridges, with thanks to Christine Carson, PhD, and Hana Belikova for their input We live in a world of quick fixes and proclaimed miracle cures, and essential oils have not escaped the proclivity people have in identifying the next magic bullet. Today, as we face issues like increased resistance in bacteria to antibiotics,

December 28th, 2017|

Why safety is important

by Robert Tisserand One of the most poisonous plants, Atropa belladonna Although essential oils are natural substances, “natural” and “safe” have never been synonymous. Nature is replete with poisonous plants (deadly nightshade, wolf’s bane, foxglove, suicide tree, etc.) not to mention spiders, snakes, scorpions etc. Natural bitter almond oil even contains cyanide, though

November 22nd, 2016|

New Survey Reveals Dangers of Not Diluting Essential Oils

by Robert Tisserand Update 12/13/2017: We are very pleased to see that since the publication of our blogpost, six companies have changed their safety guidelines! Eden Botanicals now has 0.07% as the recommended dilution for Cinnamon Bark oil, and Organic Infusions, Nature’s Gift, Ananda Apothecary and Barefut. all give 0.1% as the maximum. All of these

November 12th, 2015|

Essential Oils and the “Detox” Theory

by Kristina Bauer Globally, aromatherapy is becoming increasingly popular. As the number of essential oil users continues to grow, and as recommendations for undiluted use increase, so exposure increases. As Robert Tisserand notes, “The number of incidents of an adverse reaction to an essential oil depends on: • Its inherent toxicity • The number of

June 18th, 2015|