Research explores how certain plant-derived oils affect hard-to-treat Lyme bacteria—though more studies are needed.
Emerging research published in the journal Antibiotics has found that certain essential oils may have activity against the persistent forms of Borrelia burgdorferi, the bacterium that causes Lyme disease. While early findings from lab studies are intriguing, experts caution that more rigorous clinical trials are needed before these oils can be considered viable treatment options.
Understanding the Challenge of Persistent Lyme Symptoms
Lyme disease is the most common tick-borne illness in the U.S. It’s caused by the bacterium Borrelia burgdorferi and typically treated with antibiotics like doxycycline. Most patients recover fully, but an estimated 10–20% continue to experience lingering symptoms for months or even years after standard treatment. This condition is sometimes referred to as post-treatment Lyme disease syndrome (PTLDS), and its underlying mechanisms remain poorly understood.
One theory is that B. burgdorferi can enter a dormant phase in which some cells become slow-growing or inactive. These so-called “persister” cells are less susceptible to antibiotics, making treatment more complex.
What the Research Shows—So Far
In the search for alternative or complementary therapies, researchers at Johns Hopkins Bloomberg School of Public Health, led by Dr. Ying Zhang, have investigated the impact of essential oils on these persister cells. In earlier studies, they identified a few essential oils—such as oregano, cinnamon bark, and clove bud—that showed promising activity against stationary-phase B. burgdorferi in lab settings.
In a more recent study, the team screened an additional 35 essential oils and identified ten with notable activity against the dormant forms of the bacterium. Among them were oils derived from garlic, allspice, thyme white, myrrh, and lemon eucalyptus, as well as cinnamaldehyde, a component of cinnamon bark.
While these findings are compelling, it’s important to note that the research was conducted in vitro (i.e., in lab dishes). Dr. Zhang emphasized that while the results are encouraging, animal studies and human clinical trials are essential to determine safety, dosage, and effectiveness.
“At this stage, these essential oils look very promising as candidate treatments for persistent Lyme infection, but ultimately we need properly designed clinical trials.”
— Dr. Ying Zhang
A Word of Caution on Natural Remedies
Understandably, individuals navigating PTLDS or chronic symptoms may seek relief beyond conventional medicine. However, it’s crucial to avoid assuming that natural products—even those showing promise in early research—are safe or effective treatments. Essential oils can interact with medications, cause allergic reactions, and vary widely in quality and concentration.
We strongly recommend consulting with a licensed healthcare provider before considering any non-prescribed treatment options, especially for serious or persistent conditions like Lyme disease.
References:
- Feng, J. et al. Antibiotics, 2018, 7(4), 89.
- Centers for Disease Control and Prevention (CDC). Lyme Disease.
- Aucott, J.N. et al. Qual Life Res, 2013, 22, 75.
- Feng, J. et al. Front. Med., 2017, 4, 169.
