What about indigestion and nausea?

Stomach discomfort can be a side effect of many conditions, from pregnancy to cancer. But studies suggest essential oils may help.

People with leukemia who used their choice of lavender, chamomile or peppermint got relief from nausea and lack of appetite in one study. In another, peppermint essential oils helped some pregnant women find relief from nausea and vomiting during labor.

At Mayo Clinic, some patients are offered a cotton ball with a drop or two of ginger or spearmint essential oil to help with nausea.