Apples are a cheap and convenient source of fibre and beneficial antioxidants, plus plant compounds called polyphenols such as quercetin, which has anti-inflammatory properties.
This might explain studies that link regularly eating one apple a day with a reduced risk of heart disease, asthma and type 2 diabetes.
An apple a day can also have ‘a significant preventative effect’ in lung, colorectal and digestive tract cancers, according to a review by Perugia University, Italy, published in 2016 in the journal Public Health Nutrition.