Thanks for your query.
Read and understood your concerns.
Yes, it is very true that having part of the pancreas can cause weight loss.
This is so because the pancreas secretes the enzymes to digest the food completely, making them assimilable so that they can be absorbed by the small intestine.
When part of the pancreas is not present, these enzymes too will be less in quantity, only a part of the food will be digested hence weight loss is unavoidable.
I hope this answers your query
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