In the "World's Healthiest Fruits" list, apples come first.

Apple is a "full range of healthy fruit", rich in organic acids, vitamins, minerals, dietary fiber, polyphenols, and flavonoids and other nutrients.

According to USDA nutrient estimates, apples are the most nutrient dense of all fruits.

Although the saying "an apple a day keeps the doctor away" may not be very accurate, eating apples daily does prevent and avoid many chronic diseases.

Apples are the fruit with the most flavonoids, which are powerful bioactive compounds. The human body cannot synthesize flavonoids.

Flavonoids have a wide range of biological and pharmacological activities, and have anti-inflammatory, antibacterial, antiviral, antioxidative, antiaging and other effects.

There is increasing evidence for the role of flavonoids in preventing major chronic diseases such as cardiovascular and cerebrovascular diseases, cancer, diabetes and so on.

The flavonoids in apples are mainly concentrated near the peel, so eat apples without peeling them.

Generally, the darker the apple, the higher its flavonoid content.

Some nutritionists believe that apples are "good medicine" to help increase life expectancy, and eating an apple a day can extend the average lifespan by 3 to 5 years.