Neurosurgery expert Dr. Christopher Ogilvy explains what a brain aneurysm is and potential risk factors.Many people walk around with unruptured brain aneurysms without knowing it. Is it dangerous? Neurosurgery expert Dr. Christopher Ogilvy explains what a brain aneurysm is and how risk factors, such as family history, can increase your odds of having one. Learn the key symptoms to look out for—like the worst headache of your life—and what you should do if your pain persists (hint: get a CT scan). Dr. Ogilvy also shares why misdiagnosis is so prevalent and the latest advances in treatment technology that make surgery quick and low risk. Bonus Beware Hidden Sugars in So-called Healthy Foods