Understanding Cardiovascular Function: Sodium Control as an Irreducibly Complex System

Editor's note: Physicians have a special place among advocates of intelligent design. More than evolutionary biologists, they are familiar with the challenges of maintaining a functioning complex system, the human body. With that in mind, Evolution News & Views presents this series, "The Designed Body." Dr. Glicksman practices palliative medicine for a hospice organization.

As we saw in the last article in this series, sodium (Na) is vital for life. When table salt (NaCl) dissolves in the b...