Why some people faint at the sight of blood: Causes, body response, warning signs, and prevention tips

Fainting at the sight of blood is a common physical response caused by temporary drops in blood flow to the brain, not fear. Known as vasovagal syncope, it occurs when the nervous system overreacts to triggers like blood or stress. Recognising warning signs, responding quickly, and managing triggers can help prevent injury and reduce future episodes.

Why some people faint at the sight of blood: Causes, body response, warning signs, and prevention tips
Fainting at the sight of blood is a common physical response caused by temporary drops in blood flow to the brain, not fear. Known as vasovagal syncope, it occurs when the nervous system overreacts to triggers like blood or stress. Recognising warning signs, responding quickly, and managing triggers can help prevent injury and reduce future episodes.