Is sterilization a sin?

My friend considers herself to be very religious, but she once told me that she only wants two kids and then become sterile, but I thought sterilization is a sin? It this true?
thanks phil.

The following links should help you better understand the Church’s teachings on sterilization. If you have any further questions, please contact Catholic Answers directly.

Recommended Reading:

What is meant by “full knowledge”?
Am I living in sin when my wife has had a tubal ligation?

Are there exceptions to the ban on sterilization?

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