Insomnia,noise and depression

Insomnia link to heart failure
European Heart Journal (2013) doi:10.1093/eurheartj/eht019

Insomnia boosts risk of heart failure, according to study that enrolled 54,279 men and women age 20-89 years without the cardiovascular disease. Of these, 3.4 per cent reported difficulty falling asleep almost every night; 2.5 per cent had difficulty maintaining sleep almost every night; and 8.1 per cent experienced non-restorative sleep more than once a week. During a mean follow up of 11.3 years, 1,412 people developed heart failure.

After adjusting for other risk factors, the hazard ratios for heart failure were 0.96, 1.35 and 4.53 for people with one, two, and three insomnia symptoms respectively, compared with controls. People in whom insomnia influenced work were 31 per cent more likely to develop heart failure than those whose work was unaffected it.