Ginger Tea and Digestion: Science-Backed Benefits

Ginger has been used for centuries as a digestive remedy, and modern clinical research has actually confirmed several of its traditional uses. This guide covers what studies showed about ginger's effects on gastric emptying, nausea, and overall digestive comfort — plus how to brew it at home.

How Ginger Affects Digestion

1. Speeds Up Gastric Emptying

One of the best-documented effects of ginger is its ability to help the stomach empty more quickly. In a randomized, double-blind study of 24 healthy volunteers, participants who consumed ginger capsules had significantly faster gastric emptying and more frequent antral (stomach) contractions compared to those who took a placebo (Wu et al., 2008) [1].

 

This effect appears to extend to people with functional dyspepsia (chronic indigestion). A systematic review of clinical trials found that ginger consistently hastens stomach emptying in dyspepsia patients compared with placebo across multiple studies (Nikkhah Bodagh et al., 2019) [2].

2. Reduces Nausea and Vomiting

Ginger's antiemetic (anti-nausea) effects are among its most well-studied benefits. A meta-analysis of five randomized trials involving 363 patients found that ginger significantly reduced postoperative nausea and vomiting compared to placebo (Ernst & Pittler, 2000, American Journal of Obstetrics & Gynecology) [3].

For nausea during pregnancy, a systematic review and meta-analysis of 12 randomized controlled trials involving 1,278 pregnant women found that ginger was more effective than placebo at reducing nausea symptoms (Nutrition Journal, 2014) [4].

3. May Ease Bloating and Cramping

Traditional use of ginger for bloating, flatulence, and intestinal cramping is supported by its documented carminative (gas-relieving) effects and its ability to reduce pressure on the lower esophageal sphincter, according to a review of ginger's role in gastrointestinal disorders (Nikkhah Bodagh et al., 2019) [2].

How to Prepare Ginger Tea

 

Basic Ginger Tea

Ingredients:

• 1-inch piece of fresh ginger root, thinly sliced (or 1 teaspoon ground ginger)
• 2 cups water
• Honey or lemon (optional)

Instructions:

1.     Add sliced ginger to a small pot of water.

2.     Bring to a boil, then reduce heat and simmer for 10–15 minutes for a stronger brew (5 minutes for a milder cup).

3.     Strain into a cup.

4.     Add honey or a squeeze of lemon if desired.

5.     Drink warm, ideally 20–30 minutes before or after a meal for digestive support.

 

Most clinical studies showing a benefit used ginger doses in the range of 1–1.5 grams daily, roughly equivalent to a strong cup or two of fresh ginger tea.

 

Precautions and Who Should Be Cautious

• If you take blood thinners (such as warfarin), talk to your doctor first — ginger may have mild blood-thinning properties.
• Pregnant individuals should stick to moderate amounts (generally under 1 gram per day) and consult a healthcare provider, especially in later pregnancy.
• People with gallstones should use caution, as ginger can stimulate bile production.
• Large amounts of ginger may cause heartburn or mild stomach upset in some people — start with a small amount and adjust to tolerance.
• Ginger tea can complement, but should not replace, medical treatment for chronic digestive conditions like GERD, IBS, or gastroparesis.

 

Final Thoughts

Ginger tea is one of the few herbal remedies with genuinely strong clinical support for digestive benefits — particularly for nausea and gastric emptying. Its long history of traditional use lines up well with modern research, making it a reasonable, low-risk addition to a digestion-supportive routine for most healthy adults.

 

References

1.     Wu, K.L., Rayner, C.K., Chuah, S.K., et al. (2008). Effects of ginger on gastric emptying and motility in healthy humans. European Journal of Gastroenterology & Hepatology, 20(5), 436–440.

2.     Nikkhah Bodagh, M., Maleki, I., & Hekmatdoost, A. (2019). Ginger in gastrointestinal disorders: A systematic review of clinical trials. Food Science & Nutrition, 7(1), 96–108. https://onlinelibrary.wiley.com/doi/full/10.1002/fsn3.807

3.     Ernst, E., & Pittler, M.H. (2000). Efficacy of ginger for nausea and vomiting: a systematic review of randomized clinical trials. British Journal of Anaesthesia, 84(3), 367–371 (as summarized in a related meta-analysis published in the American Journal of Obstetrics & Gynecology).

4.     Viljoen, E., Visser, J., Koen, N., & Musekiwa, A. (2014). A systematic review and meta-analysis of the effect and safety of ginger in the treatment of pregnancy-associated nausea and vomiting. Nutrition Journal, 13, 20. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3995184/

 

This article is for informational purposes only and is not a substitute for professional medical advice. Consult a healthcare provider before using ginger regularly if you have a digestive condition, take medication, or are pregnant.