Causes and Risk Factors of Brain Aneurysm
The causes and risk factors of brain aneurysm are complex and multifactorial. They involve a combination of inherited vulnerabilities and acquired conditions that weaken blood vessel walls. Understanding the causes helps identify individuals who may benefit from screening or lifestyle changes.
7 Common Causes and Risk Factors of Brain Aneurysm
1. Genetic predisposition
A family history of aneurysms increases the risk significantly. Conditions like polycystic kidney disease, Ehlers-Danlos syndrome, and Marfan syndrome also raise susceptibility due to their impact on connective tissue and vascular integrity.
2. Hypertension (high blood pressure)
This is one of the leading risk factors. Constant pressure against arterial walls makes them more likely to bulge or rupture.
3. Smoking
Tobacco damages blood vessels and contributes to aneurysm formation and rupture. Studies show that smokers are several times more likely to develop brain aneurysms than non-smokers.
4. Age and gender
The risk rises after age 40, and women are more prone to aneurysms than men. Hormonal changes and blood vessel differences may play a role.
5. Drug and alcohol use
Cocaine and amphetamines increase blood pressure and directly damage blood vessels. Chronic alcohol use can also weaken vascular walls.
6. Head trauma and infections
Severe trauma or certain infections can trigger aneurysm development, although this is relatively rare.
7. Previous aneurysm
People who’ve had one aneurysm are more likely to develop another, especially if lifestyle risk factors are not addressed.
In South Africa, the risk factors are often compounded by underdiagnosed hypertension, smoking, and limited access to preventative screening. Raising awareness about family history, managing blood pressure, and avoiding smoking can make a major impact on reducing risk.
Causes and Risk Factors of Brain Aneurysm
Understanding the cause is the first step in preventing rupture and its devastating consequences.
👉 [Next: Diagnosis and Evaluation of Brain Aneurysm]
