The fruit most commonly associated with the saying "an apple a day keeps the doctor away" is the apple. This proverb suggests that eating apples regularly contributes to good health. Apples are nutritious, providing essential vitamins, dietary fiber, and antioxidants that can benefit overall health, including heart health and weight management. They come in various varieties, each with its own flavor profile, ranging from sweet to tart. The phrase has persisted in popular culture as a simple reminder of the benefits of maintaining a healthy diet, encouraging the consumption of fruits and vegetables as part of daily nutrition.