1 Research shows youâre around 400% more likely to have too much iron than not enough â and this can pose serious risks to your health. 2  In one study of more than 1,000 people, only 3 percent were iron deficient, but 13 percent had iron overload.
According the Bureau of Printing & Engraving, the average lifespan of a $100 bill is about 22 years.ccording the Bureau of Printing & Engraving, the average lifespan of a $100 bill is about 22 years.
The twenty-dollar gold coin was known as a  double eagle . Rather than a nickname, this nomenclature was specified by an act of Congress. As of December 2012, the average circulation life of a $20 bill is 7.7 years before it is replaced due to wear.Approximately 11% of all notes printed in 2009 were $20 bills. Twenty-dollar bills are delivered by Federal Reserve Banks in violet straps.he goal was to have a woman on the $20 bill by 2020, the centennial of the 19th Amendment which gave women the right to vote. As of April 8, 2015, the four leading candidates were Eleanor Roosevelt, Rosa Parks, Harriet Tubman and Wilma Mankiller. On May 12, 2015, Tubman was announced as the winning candidate.