here is a little blurb
Active constituents: The dried rhizome of ginger contains approximately 1–4% volatile oils. These are the medically active constituents of ginger, and they are also responsible for ginger’s characteristic odor and taste. The aromatic principles include zingiberene and bisabolene, while the pungent principles are known as gingerols and shogaols.1 The pungent constituents are credited with the anti-nausea and anti-vomiting effects of ginger.
Digestive system actions: Ginger is a classic tonic for the digestive tract. Classified as an aromatic bitter, it stimulates digestion. It also keeps the intestinal muscles toned.2 This action eases the transport of substances through the digestive tract, lessening irritation to the intestinal walls.3 Ginger may protect the stomach from the damaging effect of alcohol and non-steroidal anti-inflammatory drugs (such as ibuprofen) and may help prevent ulcers.4
Anti-nausea/anti-vomiting actions: Research is inconclusive as to how ginger acts to alleviate nausea. Ginger may act directly on the gastrointestinal system, it may affect the part of the central nervous system that causes nausea,5 6 it may exert a dual effect in reducing nausea and vomiting. Double-blind research has shown that ginger reduces nausea after surgery,7 8 although one study could not confirm this benefit.9 However, the negative study has been criticized for short-term follow-up. Other studies have found ginger helpful for preventing motion sickness,10 11 12 chemotherapy-induced nausea,13 and nausea of pregnancy.14
Circulatory actions: Ginger also supports a healthy cardiovascular system. Like garlic, ginger makes blood platelets less sticky and less likely to aggregate; however, not all human research has confirmed this. A high amount (10 grams) of ginger can inhibit excessive platelet aggregation in humans,15 but lower amounts taken for longer do not seem to have this effect.16 17 This action reduces a major risk factor for atherosclerosis.18