The Study was conducted by the Sloan Center on Aging & Work at Boston College between November 2007 and September 2008 (Time 1: November 2007 to March 2008; Time 2: May 2008 to September 2008). The Center collaborated with 9 U.S. workplaces (12 departments) on this study.
Heart muscle cells can take approximately 20 years to completely renew themselves. Never Cells that cannot repair â Itâs unfortunate for many, but old age can take itâs toll on the eyes and brain.
These are replaced at a rate of about 2 million per second (again, from wikipedia). There are 86,400 seconds in a day and so: (2 million x 86,400) + 50 to 70 billion = 222 billion to 242 billion cells produced every day by the average human body. Note, this is for the average adult. The rate of red blood cell production slows as you grow older. In order to understand this, we need to understand cell division.