А вот прямой ответ доктора -- да, может кесарево сеч. снизить либидо. По причине перерезания нервных волокон в матке -- то что я предположила выше:
Case Title: Tubaligation and C-section cause her low libido, peri-menopause PMS, menstrual cramps and headaches for no more sexual orgasm - Dr.Lin's solutions and advices.
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Unfortunately, C-section has cut the vagus nerves projected from the brain sterm down to your clitoris, urethra, vagina, bladder and uterus along your central front body, and created a heavy scar in the low abdomen and uterus. Cutting the vagus nerve can cause the clitoral and G-spot numbness or desensitization.
полностью тут
И даже приводит к депрессии... кошмар:
//// that surgery cutting the vagus nerve sensory circuits can trigger depression! The vagus nerves outflow reaches the pelvic cavity, including the uterus, bladder, urethra, vagina, clitoris, penis, prostate and testicles!)
http://www.actionlove.com/extra/c-section.htm