Original question: "As a result of a blow or jolt to the head, have you ever been knocked out or lost consciousness, been dazed or confused, or had a gap in your memory?"
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Share of U.S. adults who had ever been knocked unconscious as of 2025
A survey of U.S. adults from 2025 found that around 29 percent reported that as a result of a blow or jolt to the head, they had been knocked out or lost consciousness, been dazed or confused, or had a gap in their memory. This means these individuals experienced symptoms of a brain injury after a head injury.
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Brain Injury Association of America. (March 5, 2025). Percentage of adults in the United States who had ever been knocked unconscious as of 2025 [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 24, 2026, from /statistics/1607420/ever-been-knocked-unconscious-us-adults/
Brain Injury Association of America. "Percentage of adults in the United States who had ever been knocked unconscious as of 2025." Chart. March 5, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 24, 2026. /statistics/1607420/ever-been-knocked-unconscious-us-adults/
Brain Injury Association of America. (2025). Percentage of adults in the United States who had ever been knocked unconscious as of 2025. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 24, 2026. /statistics/1607420/ever-been-knocked-unconscious-us-adults/
Brain Injury Association of America. "Percentage of Adults in The United States Who Had Ever Been Knocked Unconscious as of 2025." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 5 Mar 2025, /statistics/1607420/ever-been-knocked-unconscious-us-adults/
Brain Injury Association of America, Percentage of adults in the United States who had ever been knocked unconscious as of 2025 ÌÇÐÄÆƽâ°æ, /statistics/1607420/ever-been-knocked-unconscious-us-adults/ (last visited July 24, 2026)
Percentage of adults in the United States who had ever been knocked unconscious as of 2025 [Graph], Brain Injury Association of America, March 5, 2025. [Online]. Available: /statistics/1607420/ever-been-knocked-unconscious-us-adults/
