Prone to fainting? It might be in your genes.
New research suggests that fainting might run in families, and a single gene may be the culprit. However, a predisposition to certain triggers might not be inherited.
The study, published April 16 in Neurology, included interviews with 44 families with a history of fainting. Of those, six families had a large number of people affected, suggesting that one gene was running through the family.