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.
A dollar goes a lot further than it used to. Weâre not talking about how much a dollar buys. Weâre talking about how long it lasts. According to a fresh report (pdf) from the US Federal Reserve, the average lifespan of a $1 note was just 18 months back in 1990. By 2012, it had grown to 70 months, or about 289% longer.