I didn't know that one can live without a pancreas
I've still got mine, but it doesn't work and is loads smaller than normal, on account of me not having bothered to use it for the last 21 years.
You don't need loads of stuff that's inside you though. Spleen, Stomach, Colon, a kidney, a lung, appendix, bollocks. It's all superfluous weight
The natural equivalent to carrying too many spares in the camelbak
All these people who say the can't lose weight should adopt a weightweenies style diet/hacksaw program.
Does sir need all his teeth?
How much body hair do you really need?
When was the last time you needed your little finger/toe?
Why do you need 2 of some organs? Spare parts?
Do you plan on having any/more children?
If it's not vital for survival, lop it off!