iTwo apples—Red Delicious and Granny Smith—ranked 12th and 13th respectively. Antioxidants are disease-fighting compounds. Scientists believe these compounds help prevent and repair oxidation damage that happens during normal cell activity. Apples are also full of a fibre called pectin—a medium-sized apple contains about 4 grams of fibre. Pectin is classed as a soluble, fermentable and viscous fibre, a combination that gives it a huge list of health benefits.

n 2004, USDA scientists investigated over 100 foods to measure their antioxidant concentration per serving size.

1. Get whiter, healthier teeth

An apple won’t replace your toothbrush, but biting and chewing an apple stimulates the production of saliva in your mouth, reducing tooth decay by lowering the levels of bacteria.

2. Avoid Alzheimer’s

A new study performed on mice shows that drinking apple juice could keep Alzheimer’s away and fight the effects of aging on the brain. Mice in the study that were fed an apple-enhanced diet showed higher levels of the neurotransmitter acetylcholine and did better in maze tests than those on a regular diet.

3. Protect against Parkinson’s

Research has shown that people who eat fruits and other high-fibre foods gain a certain amount of protection against Parkinson’s, a disease characterized by a breakdown of the brain’s dopamine-producing nerve cells. Scientists have linked this to the free radical-fighting power of the antioxidants contained therein.

4. Curb all sorts of cancers

Scientists from the American Association for Cancer Research, among others, agree that the consumption of flavonol-rich apples could help reduce your risk of developing pancreatic cancer by up to 23 per cent. Researchers at Cornell University have identified several compounds—triterpenoids—in apple peel that have potent anti-growth activities against cancer cells in the liver, colon and breast. Their earlier research found that extracts from whole apples can reduce the number and size of mammary tumours in rats. Meanwhile, the National Cancer Institute in the U.S. has recommended a high fibre intake to reduce the risk of colorectal cancer.