Between 10 and 20 per cent of the Western adult population has high blood pressure. The sensation of pins and needles is caused by an impairment of blood circulation.

So it's a good job we've got the circulatory system to transport nutrients, water and oxygen to the entire body. Inside you, there is an amazing network of blood vessels, the tubes that carry ...

Your circulatory system is made up of three parts: the heart, blood vessels and the blood itself. Your heart keeps all the blood in your circulatory system flowing. The blood travels through a ...