There aren't as many potential blood donors out there as we think

It used to be thought that nearly everyone of a certain age would be eligible to donate blood. Now, a new study shows that the percentage of eligible blood donors is lower than previously thought because certain risk factors hadn't been taken into consideration. Now it's estimated that only about 37% of adults are eligible to donate blood -- less than half of the population. And of that 37% I imagine there are few who actually donate.

For this reason, I think it's more important than ever to donate blood if you're eligible. You can save many lives at only a slight inconvenience to yourself.

Do you donate blood?