The IPS said it had had reports of passports being stolen at gunpoint in Brazil, lost in jail, and left in the pocket of a coat donated to a tramp.
The IPS based its findings on analysis of applications for replacement passports, which cost £77.50.
Men replace more than 162,500 lost and stolen passports a year compared with about 112,000 by women, the IPS says.
Criminal gangs Of all the lost and stolen passports in the UK, people in their 20s were responsible for 42.8% of the total - more than twice as many as the next nearest age group.
Lost and stolen by age
- Teenagers - 6.3%
- 20s - 42.8%
- 30s - 20.8%
- 40s - 12.8%
- 50s - 10.2%
- 60s - 5.3%
- 70s - 1.6%
- 80s - 0.2%
She said: "It's really important that you keep it safe both when you are at home and when you're abroad.
"Remember to put your passport away after use. Don't leave it in a trouser or shirt pocket in the laundry pile."
Some of the colourful reasons given for why people were parted from their passports include:
- Taxi attacked by gunman on way to airport in Brazil
- Fell out of bag while snowboarding
- Drunk boyfriend (now ex) destroyed it
- Last seen in pocket of a coat donated to tramp
- Wallet stolen at children's party with passport inside
- Passports stored in safe in Turkish villa, thieves stole safe
- Put in bin by infant daughter; and
- Put on a fire with clothes
It said people should use alternatives if they needed to prove their age and should keep a note of the number to help speed up the issuing of replacements.