How many times can you hit your head on something before permanent brain damage occurs?

The number of times a person can hit their head before experiencing permanent brain damage varies greatly depending on factors such as the severity of the impact, individual health, age, and genetics. Even a single moderate to severe impact can result in traumatic brain injury, while repeated minor concussions can accumulate damage over time. It’s crucial to take any head injury seriously and seek medical attention if symptoms arise. There is no specific threshold, as brain damage can occur unpredictably.