But with so many varieties to choose from ... boost our immune system and produce more collagen for hair, skin and nail health. Apples also contain quercetin, a flavonoid with antioxidant ...

Medically reviewed by Suzanne Fisher, RD Apples are among the most popular fruits due to their flavor and health benefits.

Seek out apples that are firm, with smooth and unblemished skin. Early varieties, such as Discovery, Beauty of Bath and Worcester Pearmain, ripen in late summer and tend to be brightly coloured ...