© 2021 Smart + Strong. All Rights Reserved. Terms of use and Your privacy. Smart + Strong® is a registered trademark of CDM Publishing, LLC.
Bloody stools can be a sign of cancer, but not always.
Transforming the more common type A blood into type O could build up blood supplies and reduce shortages around the globe.
You have been inactive for 60 minutes and will be logged out in . Any updates not saved will be lost.
Click here to log back in.
