Is Lime Water Good for Gut Health?

Partly: lime water can support gut health if it helps you drink enough water, because hydration helps keep stools soft and supports normal bowel movements. The benefit is mainly from the water, not a proven special effect of lime. Try lime water as an unsweetened way to make drinking water more appealing, and adjust it if the acidity bothers you.

Is lime water actually good for your gut?

Lime water can be a useful hydration habit, but it is not a proven treatment for constipation, digestive disease or an imbalance in gut bacteria. Its effect on your bowel habits will depend partly on whether you were drinking enough fluid already.

Gut health also involves your eating pattern, medications, activity and any underlying conditions. If you already drink enough water, adding lime is unlikely to provide a noticeable digestive benefit. It can still be an enjoyable choice if you like the taste.

How could lime water support digestion?

Hydration is the clearest potential benefit. The large intestine absorbs water as stool moves through it. When you do not get enough fluid, stools can become harder and more difficult to pass; drinking enough can help prevent that problem.

Lime provides flavor without requiring added sugar, which may make it easier for some people to choose water. Steeping slices is different from eating the fruit: infused water contains little of the fiber found in whole lime. Fiber from a varied diet helps support regular bowel movements and provides food for some gut bacteria.

Lime contains plant compounds, including citrus flavonoids, that researchers are investigating. However, it is not established that the amounts in a glass of lime water meaningfully change the human gut microbiome. Lime water does not need to “detox” the digestive tract: the liver and kidneys do most of the body's detoxification, while the lungs and gut help eliminate waste.

For a broader look at hydration and digestive choices, see the best drinks for gut health.

What does the evidence say?

The available evidence does not establish that lime water improves gut health in people. The studies below tested isolated citrus compounds in mice, not lime water in human participants.

In a 2024 mouse study of hesperetin, researchers reported changes in gut bacteria and improvements in experimental colitis after giving the animals a citrus flavonoid. That finding is preliminary and does not show that lime water treats colitis in people.

In another 2024 mouse study, naringenin, a compound found in citrus, affected stomach emptying, intestinal movement and gut bacteria. Researchers used the compound itself, so the findings cannot tell us whether a glass of lime water would have the same effects. There is no established lime water amount for changing gut bacteria or treating digestive symptoms.

How can you use lime water?

Make lime water without added sugar and drink it as part of your usual fluid intake. There is no proven schedule or required daily amount for gut health. If plain water is easier on your stomach, it can provide the same hydration benefit.

Simple lime water

Ingredients

• 1 litre water (about 4¼ US cups)
• 1 lime, washed and thinly sliced

Steps

1. Wash your hands and the lime, then put the slices in a clean jug.
2. Add the water and refrigerate for 2–4 hours for a fuller flavor.
3. Remove the lime slices or strain the water after about 4 hours to limit bitterness from the pith.
4. Keep the lime water refrigerated and drink it within 24 hours for the best flavor. Discard it after 2–3 days, or sooner if it becomes cloudy, slimy or develops an unusual sour smell.

Steeped lime water is very low in calories, usually under 10 kcal per glass. Squeezing the lime into the water or eating the fruit adds calories. If you are trying to improve regularity, consider your overall fluid and fiber intake rather than relying on lime water alone; increase fiber gradually if it tends to cause bloating.

Who should be careful with lime water?

Lime's acidity can trigger or worsen heartburn for some people with acid reflux. It can also contribute to tooth enamel erosion with frequent exposure. If you drink lime water, have it with a meal if that is comfortable, rinse your mouth with plain water afterward and avoid brushing immediately.

If you have kidney disease, heart failure or another condition that requires you to limit fluids, follow your clinician's fluid advice rather than drinking extra lime water. If you take medication and have questions about citrus or fluid intake, check with your pharmacist or clinician; do not stop prescribed medication on your own. Pregnant people and children can generally have food amounts of lime water, but should seek advice about persistent digestive symptoms or concerns about fluid intake.

See a clinician for constipation, diarrhea, abdominal discomfort or other digestive changes that persist, recur or get worse. Seek urgent medical care for severe abdominal pain, black or bloody stools, or persistent vomiting, particularly if you cannot keep fluids down.