Human activity is causing environmental degradation, which is the deterioration of the environment through depletion of resources such as air, water and soil; the destruction of ecosystems; habitat destruction; the extinction of wildlife; and pollution.
Screening for abdominal aortic aneurysm (AAA) Research studies suggest that a routine ultrasound scan is worthwhile for all men aged 65. This is because most people with an AAA do not have symptoms. Following a routine scan, surgery can be offered to men found to have an aneurysm over 5.5 cm wide.
In many cases, the cause of an aortic aneurysm is never known. Risk factors for aortic aneurysm include the following: 1  Age 55 years or older. 2  Male sex. 3  High blood pressure. 4  Smoking. 5  Inherited diseases that cause weakening of the blood vessels, with emphasis on Marfan syndrome.