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.
According to the Treasury Department's Bureau of Engraving and Printing, a $1 bill will wear out after it has been in circulation for about 18 months. The department also reports that bills of higher denominations last much longer because they do not receive as much handling while in circulation as do the dollar bills.