Low Sex Drive - Caused by Birth Control Medications

Hormone-based birth control emulates a pregnancy state by flooding the brain with excessive progesterone and/or estrogen, so that your brain will think you are pregnant and then shut down your ovarian function. This results in excessive progesterone or estrogen in the uterus and cervix. When the liver fails to detoxify the excessive hormones and to fully support the synthesis of the neurotransmitters dopamine, acetylcholine and serotonin, you may suffer from depression, low libido and orgasmic dysfunction. ^{[1] [2] [3] [4]}

Imbalance of these hormones has various impacts to female sexual well being. The labia minors and clitoral foreskin will grow if the tissue is exposed to excessive estrogen for a long time. If there is excessive estrogen in the bloodstream, the vagina becomes too wet and has no feeling. Breast tissue becomes tender and saggy. 
 
If there is excessive progesterone in the bloodstream, the vagina becomes too dry, numb, discharges very heavily, or develops a yeast infection.  It may also lead to intercourse pains, due to a lack of the anti-inflammatory hormone prostaglandin E-1 and excessive amounts of the inflammatory hormone prostaglandin E-2.
 
In either condition, the clitoris and G-spot will shrink as a result of a severe deficiency of the androgen hormones androstenedione, free testosterone and DHT.  As a result, women taking birth control with one or more of these side effects often resulted in lower sexual desire and will often suffer from sexual dysfunction or difficulty achieving an orgasm.