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Methods or devices used to prevent pregnancy by inhibiting ovulation, blocking fertilization, or preventing implantation of a fertilized egg. They can be hormonal (e.g., pills, patches, injections), barrier-based (e.g., condoms, diaphragms), intrauterine, or permanent (sterilization).
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The Center for Nutritional Psychology
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CNP Encyclopedia Editorial Board
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The Center for Nutritional Psychology. (2025). Contraceptives. In Encyclopedia of Nutritional Psychology. The Center for Nutritional Psychology.
https://www.nutritional-psychology.org/encyclopedia/contraceptives/
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