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.
Though a dollar bill typically has a life of about 6 years in circulation, so many Barr dollars were hoarded that many circulated bills still exist. A circulated note is worth only face value. According to Old Currency Buyers, as of 2014, one hundred uncirculated notes are available in the original pack for about $250.