Blueberries don't just help our skin. They're also great for our overall health. Otherwise known as bilberries, the berries, roots and leaves of this forest-loving fruit can all be used. Rich in antioxidants and flavonoids, blueberries reduce eye strain, slow down retinal ageing and keep our eyes healthy for longer. They improve memory by protecting and helping to regenerate neurons. They also help combat some chronic illnesses: they reduce hypoglycemic attacks in diabetics, reduce high blood pressure by increasing blood vessel elasticity and deal with urinary infections by preventing cystitis-inducing bacteria from reaching the urinary tract. And if that's not enough, blueberries have been shown to fend off problems associated with poor circulation.