Ginger for Nausea
Ginger has been used for centuries as a natural remedy for nausea, with its use documented in traditional medicine systems such as Ayurveda and Chinese medicine. From motion sickness to morning sickness, ginger is widely recommended for its soothing effects on the stomach.
How Ginger Works to Reduce Nausea
The active compounds in ginger, particularly gingerol and shogaol, are believed to influence the gastrointestinal tract by promoting motility (movement through the digestive system) and interacting with serotonin receptors, which are linked to feelings of nausea. These compounds also have anti-inflammatory and antioxidant effects, which may further help to reduce nausea by calming the digestive system.
Understanding the Role of Serotonin in Nausea
Nausea can result from an overactivation of serotonin receptors in the gut and subsequent signalling to the brain. Nausea can be triggered when serotonin is released in the gut in response to irritation or distress, such as during gastrointestinal infections or chemotherapy. Serotonin activates specific receptors (5-HT3 receptors) in the gut, which send signals through the vagus nerve to the brain’s vomiting centre. This signal causes the brain to perceive nausea, and in some cases, may lead to vomiting. This serotonin-gut connection plays a key role in how nausea is experienced, and substances that can modulate this serotonin release—such as ginger—can help reduce these sensations.
What Does the Research Say?
Several studies have supported the use of ginger as a natural treatment for various types of nausea:
- Motion Sickness: Research published in the American Journal of Physiology demonstrated that ginger may be effective in reducing motion sickness. In a study, participants who took ginger reported less nausea compared to those who took a placebo, especially in situations like sea travel where motion sickness is common.
- Morning Sickness During Pregnancy: Ginger is perhaps best known for its use in relieving morning sickness. A systematic review published in Obstetrics & Gynecology examined multiple studies on ginger for pregnancy-related nausea and found that ginger significantly reduced nausea and vomiting compared to a placebo, with few side effects.
- Post-Surgery and Chemotherapy-Induced Nausea: Studies have also found that ginger can help alleviate nausea and vomiting associated with surgery and chemotherapy. A clinical trial published in the British Journal of Anaesthesia found that ginger was effective in reducing post-operative nausea and vomiting (PONV). Another study published in Supportive Care in Cancer found ginger helpful in reducing chemotherapy-induced nausea, when used alongside standard anti-nausea medications.
Numerous studies, particularly in the fields of motion sickness, pregnancy, and chemotherapy-related nausea, have consistently shown ginger’s effectiveness. However, it’s worth noting that ginger may not work for everyone, and more severe nausea conditions might require stronger treatments. In most cases, though, ginger serves as a gentle and natural remedy with minimal side effects.
How to Use Ginger for Nausea
- Fresh Ginger: Drinking ginger tea made from fresh ginger root can be an effective way to reduce nausea. Use about 1 to 2 grams of fresh ginger (approximately a 1-inch/2.5cm piece of ginger root, sliced finely). Peel and thinly slice the ginger, then steep the slices in hot water for 10-15 minutes. This allows enough time for the beneficial compounds, like gingerol, to be released into the tea, maximising its effectiveness for reducing nausea. You can add honey or lemon for flavour, if desired.
- Ginger Supplements: Standardised ginger supplements are available in capsules and are often used for more consistent dosing.
- Ginger Candy or Chews: These are convenient, especially for travel, and can help curb mild nausea.
Safety Considerations
While ginger is generally safe for most people, consuming large amounts may cause mild side effects such as heartburn or digestive upset. Pregnant women and those on blood-thinning medications should consult their healthcare provider before using ginger regularly.
