Answer:
What can you lose that will cause other people to lose theirs too?
Everyone has me, but nobody can lose me. What am I?
You throw away my outside, you cook my inside. Then you eat my outside and you throw away my inside. What am I?
It's been around for millions of years but is never more than a month old. What is it?
In my life I must bare my bloodline I must share.
No matter how little or how much you use me, you change me every month.