Apples contain a high amount of vitamin C. This is a powerful natural antioxidant that can help boost your body’s resistance to both infectious agents and damage caused by free radicals. Each time you eat an apple, you’ll get a healthy dose of this important vitamin. B-complex vitamins are also found in apples. This includes riboflavin, thiamin and vitamin B-6, all of which are essential in maintaining red blood cells and keeping your nervous system strong and healthy. Apples include vitamin K as well. This vitamin helps to make proteins, which strengthens your bones and encourages normal blood clotting. Vitamin E is found in smaller amounts in apples compared to these other vitamins. However, this vitamin does contribute to healthier skin and a stronger immune system.