Ginger has been used for centuries for digestion issues. I remember drinking ginger ale as kid when I was sick. Too bad it was probably artificially flavored but nonetheless. Ginger capsules were my BFF when I had morning sickness.
From the Young Living site: "Ginger (Zingiber officinale) has a warm, spicy fragrance that is energizing. Supportive of the digestive system, ginger is commonly used to soothe, comfort, and balance digestive discomfort.* It may also be used to enhance the flavor of foods. Ginger has an approximate ORAC of 992,571 (TE/L). TE/L is expressed as micromole Trolox equivalent per liter. Ingredients: Young Living Therapeutic Grade™ ginger essential oil
So, it's no wonder ginger oil is so supportive to healthy digestion.