The Australian Queen Garnet contains some of the highest levels of antioxidants ever found in a fruit and has just gone on sale in the UK.
According to studies the fruit has five to ten times more anthocyanins than a normal plum.
Anthocyanins provide the dark colours of many fruits and vegetables, such as blueberries and red peppers.
Research suggests that the plant antioxidants, which mop up harmful molecules, can help protect arteries and prevent the DNA damage that leads to cancer.
The plum was accidentally created during a breeding programme for a disease-resistant version of the common plum in Queensland, Australia.
It is currently undergoing trials in studies with obese rats, and early results relating to the fruit's potential to aid weight loss have been positive, reports say.
Anthocyanins provide the dark colours of many fruits and vegetables, such as blueberries and red peppers. They have high levels of antioxidants which appeare to reduce inflammation and reduce the effects of arthritis in the body.
The compounds in the antioxidants have similar effects as drugs such as aspirin and ibuprofen.
Similar levels of anthocyanins in berries usually made them inedible, but the Queen Garnet is incredibly sweet and a 'delicious addition to the fruit bowl' with a 'delicious jammy taste - similar to that of a black fig'.