HAVING to get up in the middle of the night to pee could mean you have high blood pressure, scientists have discovered. The risk is raised by 40 per cent by trips to the loo. And the more times you get up, the higher the chance. High blood pressure can lead to heart attacks and strokes if left untreated. More than one in four adults in the UK have high blood pressure, although many won't realise it. Dr Satoshi Konno of Japan’s Tohoku Rosai Hospital, which quizzed 3,749 people, warned sufferers to cut salt intake. Compared to western countries, people...