History: Why some people go all funny at the sight of blood
If the sight of blood makes your patient drop faster than a Southern Belle with a case of the vapours, be kind; they may not be a complete wuss after all.
It turns out we actually have our ancient ancestors to thank for this one.
While seemingly irrational and ever so slightly embarrassing in a modern-day setting, vasovagal syncope at the sight of blood may have given us an evolutionary edge.
How you ask? Well, there are a few theories. One is the adaptationist hypothesis: it posits that the rapid decrease in heart rate and blood pressure helped to