Constipation can be uncomfortable, frustrating, and surprisingly persistent. When bowel movements become infrequent or stools become hard and difficult to pass, many people immediately start looking for a quick natural remedy.

One fruit that has attracted particular attention from gastroenterologists is green kiwifruit.

The social-media image suggests that there is a single “number one” fruit that can make constipation disappear. The reality is a little more nuanced: there is no fruit that guarantees immediate relief for everyone, but research has found that green kiwifruit can improve bowel frequency and stool consistency in some people with constipation. The American College of Gastroenterology specifically lists kiwis and prunes among fruits that can be useful sources of fiber for constipation.

So what makes kiwi interesting, and how can you incorporate it into your diet?

Why Constipation Happens

Constipation isn’t simply about “not going to the bathroom enough.”

It can involve:

Hard or dry stools
Straining during bowel movements
A feeling that the bowel hasn’t completely emptied
Fewer bowel movements than usual
Difficulty passing stool
Abdominal discomfort or bloating

Occasional constipation can happen to almost anyone. Changes in diet, reduced physical activity, dehydration, travel, changes in routine, and certain medications can all contribute.

For persistent constipation, however, it’s important to look beyond food alone.

Why Green Kiwi May Help

Green kiwifruit has several characteristics that make it particularly interesting for digestive health.

It contains dietary fiber, and its structure may also help retain water in the digestive tract. Researchers have studied green kiwi specifically as a food-based approach for constipation.

The American College of Gastroenterology reports that studies have found benefits from eating two green kiwifruits per day in people with functional constipation or constipation-predominant irritable bowel syndrome.

That doesn’t mean everyone needs exactly two kiwis, or that two kiwis will work instantly.

But it does provide something that many viral health claims lack: actual clinical research.

What the Research Found

One randomized controlled trial compared green kiwifruit with psyllium in people with functional constipation or constipation-predominant IBS.

Participants consumed either two green kiwifruits per day or psyllium for four weeks.

According to the American College of Gastroenterology’s review of the study, kiwifruit increased complete spontaneous bowel movements and was associated with improvements in gastrointestinal comfort.

An earlier U.S. study also found that two green kiwifruits daily benefited people with chronic constipation, with results comparable to established dietary approaches such as prunes and psyllium.

These findings don’t establish kiwi as a universal cure, but they do make it a reasonable food to consider as part of a constipation-friendly diet.

Kiwi Isn’t the Only Fruit That Can Help

One important point often lost in viral posts is that there isn’t necessarily one “magic” fruit for constipation.

Several fruits can contribute fiber and water to the diet.

Good choices include:

Kiwifruit

Especially green kiwifruit, which has been specifically studied for constipation.

Prunes

Prunes are dried plums and contain sorbitol, a naturally occurring sugar alcohol that can draw water into the bowel. They have been studied as a dietary approach to constipation.

Pears

Pears provide fiber and can be particularly useful when eaten with the skin after being properly washed.

Apples

Apples with their skin provide dietary fiber.

Berries

Berries can contribute fiber while also providing a variety of plant compounds.

Oranges

Whole oranges provide fiber that isn’t present in the same amount when you drink only orange juice.

The broader lesson is that overall dietary fiber matters more than finding one magical food.

Fiber Is One of the Keys to Regularity

Your digestive system needs adequate fiber to help form and move stool.

The U.S. National Institute of Diabetes and Digestive and Kidney Diseases recommends that adults generally get 22–34 grams of fiber per day, depending on age and sex.

Fiber comes from many foods, including:

Fruits
Vegetables
Beans
Lentils
Chickpeas
Whole grains
Nuts
Seeds

If your current diet is low in fiber, suddenly consuming huge amounts can actually make you feel worse.

You may experience:

Gas
Bloating
Abdominal discomfort

That’s why health authorities recommend increasing fiber gradually and drinking enough fluids as you increase your intake. (NIDDK)

Why Water Matters

Fiber and fluids work together.

When you increase fiber but don’t drink enough, you may experience additional bloating or discomfort.

NIDDK recommends drinking plenty of water and other liquids to help fiber work more effectively and make stools softer and easier to pass. (NIDDK)

That doesn’t mean you need to force enormous amounts of water.

Your individual fluid needs depend on factors such as your body size, activity level, climate, and health status.

The goal is simply to avoid becoming dehydrated while maintaining a fiber-rich diet.

How to Try Kiwi for Constipation

If you enjoy kiwi and want to incorporate it into your diet, there are several easy options.

Simple morning option

Eat a green kiwi alongside breakfast.

Two-kiwi approach

The research discussed by the American College of Gastroenterology used two green kiwifruits per day.

You could have one with breakfast and another later in the day.

Add kiwi to yogurt

Slice kiwi over plain yogurt and add oats or another high-fiber ingredient.

Make a fruit bowl

Combine kiwi with berries, pear, or another fruit.

Add it to oatmeal

Chopped kiwi can add flavor and fruit to a breakfast containing oats.

The important point is consistency rather than expecting an immediate “flush.”

Don’t Expect Instant Results

The phrase “quick bowel movements” makes for a compelling social-media headline, but digestion doesn’t always work on a timer.

In clinical research, the effects of dietary interventions were evaluated over weeks, not minutes.

The 2023 trial reviewed by the American College of Gastroenterology used four-week treatment periods.

So if you eat one kiwi and don’t immediately have a bowel movement, that doesn’t mean it failed.

Your overall eating pattern, fluid intake, physical activity, medications, and underlying digestive health can all influence bowel habits.

What About Prunes?

If kiwi doesn’t appeal to you, prunes are another food with evidence behind them.

Prunes contain fiber and sorbitol, which can have an osmotic effect in the digestive tract.

The American College of Gastroenterology notes that prunes have been studied for constipation and are one of the specific foods with evidence for increasing bowel movements.

However, there’s an important consideration: the sorbitol in prunes can cause gas or bloating in some people, particularly those who are sensitive to certain fermentable carbohydrates.

So the “best” fruit can differ from person to person.

What If Fiber Makes You More Bloated?

This is common when someone suddenly changes from a low-fiber diet to a high-fiber diet.

Instead of going from very little fiber to huge amounts overnight, increase gradually.

For example, you might start by adding:

One piece of fruit
A serving of vegetables
Oatmeal at breakfast
Beans or lentils with a meal
A small amount of nuts or seeds

Then gradually increase your intake as your digestive system adapts.

ACG also advises increasing fiber gradually and increasing fluids alongside it.

Movement Can Help Too

Food isn’t the only lifestyle factor involved.

Regular physical activity may help relieve constipation, according to NIDDK.

You don’t necessarily need an intense workout.

For many people, simple activities such as:

Walking
Light cycling
Household activity
Gentle exercise

can help keep the body active.

A short walk after a meal can also become a useful daily habit.

Don’t Ignore the Urge to Go

Another surprisingly simple habit is responding to your body’s signals.

If you repeatedly ignore the urge to have a bowel movement, it can become harder to maintain regular bowel habits.

NIDDK also notes that trying to establish a regular bathroom routine may help. Some people may find it useful to try going 15–45 minutes after breakfast, because eating can stimulate movement of the colon.

Give yourself enough time and avoid rushing.