“…It is well-known that poor health status and associated pain lead to disturbed and poor quality sleep (Davidson et al, 2002;Spiegel, Leproult & Van Cauter, 1999;Vitielllo et al, 2002). However, increasing evidence from prospective studies shows that disrupted sleep and short sleep duration (under 6.5 hours) are implicated in higher levels of diabetes, obesity, hypertension and mortality (Ayas, White, Al-Delaimy, Manson, Stamfer, Speizer et al, 2003;Ferrie, Shipley, Cappuccio, Brunner, Miller, Kumari et al, 2007;Gangwisch, Heymsfield, Boden-Albala, Buijs, Kreier, Pickering et al, 2007;Patel, Ayas, Malhotra et al, 2004;Tamakoshi & Ohno, 2004;Yaggi, Araujo & McKinlay, 2006).…”