Tea Tree Oil & Cancer

Tea tree oil is derived from the leaves of a tree called Melaleuca alternifolia that grows in Australia. Melaleuca oil has been used in Australia to treat infections of the skin or nails caused by bacteria or fungi. The oil can be applied directly to the skin but is toxic if ingested. According to the American Cancer Society, no clinical studies have tested its effectiveness in cancer patients to date.

Potential Use

In June 2010, the Rural Industries Research and Development Company (RIRDC) of the Australian Government released a report regarding the potential use of tea tree oil for the treatment of skin cancer. The study was conducted by researchers from the University of Western Australia. The researchers found that applying tea tree oil topically to mice prevented the growth of new tumors and caused existing tumors under the skin to shrink. Future studies are needed on humans to determine whether or not tea tree oil can be used to prevent or treat skin cancer.

Non-Medicinal Uses

Due to its germ-killing quality, tea tree oil has an abundance of non-medicinal uses. It can be found in household cleaners, laundry detergents, make-up, soap, lotions and creams. When used in products, tea tree oil typically replaces one or more harmful ingredients such as bleach, ammonia or formaldehyde. Not only do these chemicals cause respiratory problems, but they are also known carcinogens. According to the National Cancer Coalition, exposure to these chemicals over a long period of time can lead to lung cancer.

Types

There are several different strains of Melaleuca alternifolia tree. Better strains provide higher-quality oils. Medicinal effects are proportional to the quality of the oil. In his book, "The Melaleuca Wellness Guide," R.M. Barry states that higher grades of melaleuca oil contain more terpinen 4-ol and less cineole. Terpinen 4-ol is the therapeutic agent whereas cineole is the ingredient associated with skin irritation. Therefore, higher grades of tea tree oil should be used in cancer research.

Warnings

Although tea tree oil is a natural product, you should not conclude from this that it is safe. If you swallow tea tree oil, you risk the chance of being poisoned. In fact, in 2008 the National Capital Poison Center reported that the number of calls made to poison control centers in the United States concerning tea tree oil was more than double that of any other essential oil.

Side Effects

Side effects of tea tree oil are rare. There is a small chance you may have an allergic reaction and develop a skin rash. Rashes are generally mild and may cease to develop once you discontinue use. Since Melaleuca afternifolia is a member of the myrtle family, you may be more susceptible to an allergic reaction if you have an allergy to other members of the myrtle family such eucalyptus, all spice, guava or clover. Use is not recommended for children, pregnant women or women who are breast-feeding.