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.
Ongoing Bills. 1  Utility Bills: Hold on to these for one yearâjust in case there are any billing issues. If you claim a home-office deduction, keep statements for three years because that's how long the IRS generally has to challenge tax returns. 2  Pay Stubs: Save one year's worth.