How many more years do you have to go? http://rockettube.fun/ rockettube.com The new research backs up the findings of earlier work published by Imperial College. The 2008 HYENA Study discovered a 14% increase in the risk of high blood pressure (hypertension) for each 10 decibel increase in night-time aircraft noise. It looked at 4,861 people aged between 45 and 70 who had lived near Heathrow, Berlin Tegel, Amsterdam Schiphol, Stockholm Arlanda, Milan Malpensa and Athens Elephterios Venizelos airports for at least five years.