Sleep apnoea - Complications 

Complications of sleep apnoea 

High blood pressure

Many people with obstructive sleep apnoea (OSA) develop high blood pressure (hypertension). If you have high blood pressure, your risk of developing cardiovascular diseases, such as a heart attack or stroke, is also increased.

Currently, it is uncertain whether people develop hypertension as a direct response to OSA, or whether it is the result of an underlying cause of OSA, such as obesity. However, maintaining a healthy weight, taking regular exercise and eating a healthy, balanced diet is the best way of preventing hypertension.

See the Health A-Z topic about High blood pressure for more information about this condition.

Other medical conditions

If OSA is left untreated, hypertension also increases your risk of developing other serious conditions, including:

  • heart attack - a serious condition that is caused by a blood clot blocking the supply of blood to the heart
  • stroke - a serious medical condition that is caused by a disturbance in the blood supply to the brain
  • obesity - a condition in which a person is carrying too much body fat for their height and sex
  • type 2 diabetes - a long-term condition that is caused by too much sugar (glucose) in the blood.

Last reviewed: 22/07/2010

Next review due: 22/07/2012