Thickly boiled blueberry extract helps with weeping lichens and severe itching. Blueberry can also protect against urinary bladder cancer by drinking blueberry juice daily.
If you have a susceptible irritable stomach, you can crush blueberries in a bowl, pour lukewarm milk over them and then chew them finely before swallowing them. In this way the stomach is relieved.
However, blueberry leaves should not be consumed excessively as they can lead to poisoning if overdosed.
The blueberry also has the rare property of reducing the sensitivity of the eyes to glare. Concentrated substances from blueberries can thus improve the night blindness of drivers and should only be bought in pharmacies.