How many pints can a healthy person survive with, considering the normal body contains 80 pints?

A healthy adult typically has around 80 pints of blood in their body, and survival after blood loss largely depends on the amount of blood that has been lost. Research suggests that a person can generally survive the loss of about 40% of their total blood volume, which translates to approximately 30 to 40 pints lost, depending on the individual's body weight and composition.

In this context, the answer indicating 40 pints is correct because losing more than this amount can lead to severe complications, including shock or organ failure, significantly reducing chances of survival. This threshold reflects the body's physiological limits and the critical role that blood plays in maintaining life by transporting oxygen and nutrients to tissues and removing waste.