If you can’t sleep due to heart trouble it may be may be caused by the following conditions; anxiety, illness, high blood pressure, low blood pressure, an arrythmia, hyperthyroidism, heart failure and congestive heart failure. A new study found that heart failure and coronary heart disease in middle-aged and older men is linked to obstructive sleep apnea. When men suffer from obstructive sleep apnea (OSA) they are 58% more likely to develop heart trouble over eight years compared to those without OSA. The study at Boston University School of medicine monitored 1927 men and 2495 women over 40 years of age. All participants were free of heart disease at the start of the study. Read more »