Grapefruit is an incredibly healthy food to include in your diet. That's because it's high in nutrients, but low in calories. In fact, it's one of the lowest-calorie fruits.

Eating grapefruit regularly may be beneficial for your immune system.

Eating grapefruit regularly may have the potential to prevent insulin resistance, which can lead to diabetes

Regularly consuming grapefruit is thought to improve heart health by reducing risk factors for heart disease, such as high blood pressure and cholesterol.

Grapefruit contains a lot of water and is, therefore, very hydrating. In fact, water makes up most of the fruit's weight.

Avocados contain 25 milligrams per ounce of a natural plant sterol called beta-sitosterol. Regular consumption of beta-sitosterol and other plant sterols has been seen to help maintain healthy cholesterol levels.

 Avocados contain lutein and zeaxanthin, two phytochemicals that are especially concentrated in the tissues in the eyes where they provide antioxidant protection to help minimize damage, including from ultraviolet light.

Adequate intake of folate from food has shown promise in protecting against colon, stomach, pancreatic, and cervical cancers.

Foods containing high levels of folate may help to decrease the risk of depression because folate helps to prevent the build-up of homocysteine, a substance that can impair circulation and delivery of nutrients to the brain.

Adequate fiber promotes regular bowel movements, which are crucial for the daily excretion of toxins through the bile and stool.

Apples are high in fiber and water — two qualities that make them filling.

Apples have been linked to a lower risk of heart disease

Apples contain pectin, a type of fiber that acts as a prebiotic. This means it feeds the good bacteria in your gut.

Test-tube studies have shown a link between plant compounds in apples and a lower risk of cancer

Eating fruit is linked to higher bone density, which is a marker of bone health.

Mango is packed with polyphenols — plant compounds that function as antioxidants.

Mango is high in vitamin C, which promotes healthy hair and skin.

Mango is high in polyphenols, which may have anticancer properties.

Mangoes are also a good source of vitamin A, which supports eye health.

Mango has several qualities that make it excellent for digestive health.

Lemons are a good source of vitamin C.

 Their citric acid may help prevent kidney stones by increasing urine volume and increasing urine pH, creating a less favorable environment for kidney stone formation

Lemons contain some iron, but they primarily prevent anemia by improving your absorption of iron from plant foods

Some observational studies have found that people who eat the most citrus fruit have a lower risk of cancer

Lemons are made up of about 10% carbs, mostly in the form of soluble fiber and simple sugars. Soluble fiber can improve gut health and slow the digestion of sugars and starches. These effects may result in reduced blood sugar levels