Grapefruit is a tropical citrus fruit known for its sweet yet tart taste. It is rich in nutrients, antioxidants, and fiber. This makes it one of the healthiest citrus fruits you can eat.
Plus, research shows that grapefruit may have some powerful health benefits. These include weight loss and a reduced risk of heart disease.
Grapefruit is a great food to include in a balanced diet. That’s because it’s high in nutrients but low in calories. In fact, it’s one of the lowest-calorie fruits.
It provides a decent amount of fiber, in addition to more than 15 beneficial vitamins and minerals.
Here are some of the major nutrients found in half of a medium-sized grapefruit (1):
- Calories: 52
- Carbs: 13 grams
- Protein: 1 gram
- Fiber: 2 grams
- Vitamin C: 64% of the recommended dietary intake (RDI)
- Vitamin A: 28% of the RDI
- Potassium: 5% of the RDI
- Thiamine: 4% of the RDI
- Folate: 4% of the RDI
- Magnesium: 3% of the RDI
Additionally, it is a rich source of some powerful antioxidant plant compounds, which are likely responsible for many of its health benefits.
SUMMARY
Grapefruit is low in calories and provides a significant amount of fiber, vitamins, minerals, and antioxidants.
2. It may benefit your immune system
Eating grapefruit regularly may be beneficial for your immune system.
It’s prized for its high vitamin C content. Vitamin C has antioxidant properties known to protect your cells from harmful bacteria and viruses .
Additionally, studies have shown vitamin C to be beneficial for helping people recover more quickly from the common cold .
Many other vitamins and minerals found in grapefruit are known to benefit immunity, including vitamin A. Vitamin A has been shown to help protect against inflammation and several infectious diseases .
Grapefruit also provides small amounts of B vitamins, zinc, copper, and iron. These all work together in the body to promote immune system function. They also help maintain the integrity of your skin, which acts as a protective barrier to infection .
SUMMARY
Grapefruit may benefit your immune system. It contains several vitamins and minerals known for their role in protecting the body against infection.
3. Grapefruit has weight loss benefits
Grapefruit is a weight loss–friendly food.
It has several properties linked to weight loss, especially its fiber content. This helps promote fullness and reduce calorie intake
.
Grapefruit contains a decent amount of fiber — 2 grams in half of a medium-sized fruit .
Additionally, grapefruit contains few calories but lots of water, which is another characteristic known to help with weight loss .
Several studies have found weight-reducing effects associated with consuming grapefruit. For instance, one study found that participants experienced a reduced waist size when they consumed grapefruit daily with their meals (11Trusted Source).
However, there were no significant differences in the reduction of waist size between the study participants who drank water, those who ate grapefruit, and those who drank grapefruit juice.
This isn’t to say that grapefruit will produce weight loss on its own, but adding it to an already balanced, nutritious diet may prove to be beneficial.
SUMMARY
Eating grapefruit before meals may help with weight loss. Its fiber and water content can promote fullness and reduce calorie intake.
4. Grapefruit may help prevent insulin resistance and diabetes
Eating grapefruit regularly may have the potential to prevent insulin resistance, which can lead to diabetes.
Insulin resistance occurs when your cells stop responding to insulin.
Insulin is a hormone that regulates many processes in your body. It’s involved in many aspects of your metabolism, but it’s most commonly known for its role in blood sugar control .
Insulin resistance ultimately leads to higher insulin and blood sugar levels, two primary risk factors for type 2 diabetes .
Eating grapefruit may help control insulin levels, meaning it may have the ability to reduce your likelihood of becoming insulin resistant .
In one study, subjects who ate half of a fresh grapefruit before meals experienced a significant reduction in both insulin levels and insulin resistance, compared with the group of people who didn’t eat grapefruit .
Plus, eating fruit as a whole is generally associated with better blood sugar control and a reduced risk of type 2 diabetes.
SUMMARY
Grapefruit may help reduce insulin resistance, which can lower your risk of developing type 2 diabetes.
5. Eating grapefruit may improve heart health
Regularly consuming grapefruit is thought to improve heart health by reducing risk factors for heart disease, such as high blood pressure and cholesterol.
SUMMARY
Grapefruit contains nutrients and antioxidants shown to help protect the heart by regulating blood pressure and cholesterol levels.
6. It’s high in powerful antioxidants
Grapefruit contains a few different antioxidants that provide various health benefits, including a reduced risk of several diseases
Here’s an overview of the most important antioxidants in grapefruit:
- Vitamin C. This is a powerful, water-soluble antioxidant that is present in high amounts in grapefruit. It may protect cells from damage that often leads to heart disease and cancer (
22 ). - Beta-carotene. It’s converted into vitamin A in the body and is thought to help reduce the risk of some chronic conditions, including heart disease, cancer, and eye-related disorders like macular degeneration (
23 ). - Lycopene. This is known for its potential ability to prevent the development of certain types of cancer, especially prostate cancer. It may also help slow the growth of tumors and decrease the side effects of common cancer treatments (
24 ,25 ). - Flavanones. Their anti-inflammatory properties have been shown to reduce blood pressure and cholesterol levels, reducing the risk of heart disease .
SUMMARY
Grapefruit contains several types of antioxidants that may help prevent the development of some chronic conditions, including heart disease and cancer.
7. It may reduce the risk of kidney stones
Consuming grapefruit may reduce your risk of developing kidney stones, which result from a buildup of waste materials in the kidneys.
These waste materials are products of metabolism that are typically filtered through the kidneys and removed from the body in urine.
However, when they crystallize in the kidneys, they become stones. Larger kidney stones may cause a blockage in the urinary system, which can be incredibly painful.
The most common type of kidney stone is calcium oxalate stones. Citric acid, an organic acid found in grapefruit, may be effective at preventing them by binding with calcium in your kidneys and flushing it out of your body (27Trusted Source).
Also, citric acid has the ability to increase the volume and pH of your urine, producing an environment that is less favorable to the formation of kidney stones.
SUMMARY
The citric acid in grapefruit may help reduce the formation of calcium oxalate kidney stones.
8. Grapefruit has hydration benefits
Grapefruit contains a lot of water and is, therefore, very hydrating. In fact, water makes up most of the fruit’s weight.
There are almost 4 ounces (118 ml) of water in half of a medium-sized grapefruit, which accounts for about 88% of its total weight (1).
While drinking lots of water is the best way to stay hydrated, eating water-rich foods can also help.
SUMMARY
Grapefruit has a high water content, which helps you stay hydrated.
9. It’s easy to add to your diet
Grapefruit requires little-to-no preparation, so it’s fairly easy to add to your diet.
Even if you live a busy, on-the-go lifestyle, you can still enjoy grapefruit on a regular basis without worrying about it taking up too much of your time.
Here are some ways you can enjoy grapefruit:
Snack on grapefruit slices alone.
Eat it as an alternative to dessert foods that are less nutritious.
Try this salad, which combines grapefruit with arugula and pecans.
Blend it into a smoothie with other fruits and veggies.
Include it in a breakfast parfait with yogurt and honey.
SUMMARY
Grapefruit is a nutritious food that’s easy to incorporate into your diet.
10. Grapefruit has benefits for skin
Grapefruit contains vitamin C, which helps protect the skin against sun damage, aging, and inflammation .
Vitamin C is often used in serums to heal the skin, brighten dark spots, and smooth the skin surface. However, studies also show that an increased intake of vitamin C through foods like grapefruit may help with hyperpigmentation, discoloration, and signs of aging .
Vitamin C helps the body produce more collagen, which has been shown to benefit skin hydration and wrinkles .
Grapefruit also contains citric acid, malic acid, and tartaric acid. These are all different types of alpha-hydroxy acids (AHAs). AHAs are often used in skin care products due to their variety of benefits, including improved skin texture and elasticity .
SUMMARY
Grapefruit contains several ingredients that have a wide range of skin benefits and protections.
There are a few reasons why some people may need to avoid eating grapefruit.
Medication interactions
For some people, consuming grapefruit and its juice may lead to medication interactions (
This is because it contains substances that inhibit cytochrome P450, an enzyme your body uses to metabolize certain medications.
If you eat grapefruit while taking these medications, your body may not be able to break them down. This could cause an overdose and other adverse effects (
The medications most likely to interact with grapefruit include (
- immunosuppressants
- benzodiazepines
- most calcium channel blockers
- indinavir
- carbamazepine
- some statins
If you are taking any of these medications, talk with your doctor before adding grapefruit to your diet.
Tooth enamel erosion
In some instances, eating grapefruit may lead to tooth enamel erosion.
Citric acid, which is found in citrus fruits, is a common cause of enamel erosion, especially if you consume it in excess (
If you have particularly sensitive teeth, you may need to avoid acidic fruits. However, there are some things you can do to preserve your tooth enamel while still enjoying grapefruit:
- Never suck on grapefruit or other acidic fruits, and avoid putting them directly against your teeth.
- Rinse your mouth with water after eating the fruit and wait 30 minutes to brush your teeth.
- Eat cheese with the fruit. This helps neutralize the acidity in your mouth and increase saliva production.
SUMMARY
If you take certain medications or have sensitive teeth, you may need to limit your grapefruit intake or avoid it altogether.
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