Vaginal lubrication

vaginal drynessnatural lubricationvaginal fluidvaginal secretionslubricationvaginal fluidsincreases due to engorgementlubricatelubricate the vaginalubricated
Vaginal lubrication is a naturally produced fluid that lubricates a woman's vagina.wikipedia
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Vagina

birth canalvaginalvaginal opening
Vaginal lubrication is a naturally produced fluid that lubricates a woman's vagina.
This increase in moisture provides vaginal lubrication, which reduces friction.

Sexual arousal

sexually arousedarousalaroused
Vaginal lubrication is always present, but production increases significantly near ovulation and during sexual arousal in anticipation of sexual intercourse.
Male arousal will lead to an erection, and in female arousal the body's response is engorged sexual tissues such as nipples, vulva, clitoris, vaginal walls and vaginal lubrication.

Bartholin's gland

Bartholin's glandsBartholin glandBartholin glands
Plasma from vaginal walls due to vascular engorgement is considered to be the chief lubrication source, and the Bartholin's glands, located slightly below and to the left and right of the introitus (vaginal opening), also secrete mucus to augment vaginal-wall secretions.
They secrete mucus to lubricate the vagina and are homologous to bulbourethral glands in males.

Sexual intercourse

sexcopulationintercourse
Vaginal lubrication is always present, but production increases significantly near ovulation and during sexual arousal in anticipation of sexual intercourse.
Foreplay may precede some sexual activities, often leading to sexual arousal of the partners and resulting in the erection of the penis or natural lubrication of the vagina.

Dyspareunia

pain during sexual intercoursepain with sexpainful intercourse
Insufficient lubrication or vaginal dryness in women can cause dyspareunia, which is a type of sexual pain disorder.
Both vaginal lubrication and vaginal dilation decrease.

Menopause

postmenopausalmenopausalpremenopausal
While vaginal dryness is considered an indicator for sexual arousal disorder, vaginal dryness may also result from insufficient excitement and stimulation or from hormonal changes caused by menopause (potentially causing atrophic vaginitis), pregnancy, or breast-feeding.
Other symptoms may include vaginal dryness, trouble sleeping, and mood changes.

Female sexual arousal disorder

female sexual dysfunctionfemale sexual interest/arousal disorderlow sexual desire in women
While vaginal dryness is considered an indicator for sexual arousal disorder, vaginal dryness may also result from insufficient excitement and stimulation or from hormonal changes caused by menopause (potentially causing atrophic vaginitis), pregnancy, or breast-feeding.
The diagnosis can also refer to an inadequate lubrication-swelling response normally present during arousal and sexual activity.

Sjögren syndrome

Sjögren's syndromeSjogren's syndromeSjogren syndrome
Vaginal dryness can also be a symptom of Sjögren's syndrome (SS), a chronic autoimmune disorder in which the body destroys moisture-producing glands.
Vaginal dryness and dry skin and dry nose may also occur.

Sexual dysfunction

sexual disorderssexualsexual problems
Insufficient lubrication or vaginal dryness in women can cause dyspareunia, which is a type of sexual pain disorder.
Dyspareunia may be caused by insufficient lubrication (vaginal dryness) in women.

Vasoactive intestinal peptide

VIPvasoactive intestinal polypeptideVasoactive intestinal peptide (VIP)
The human vagina is serviced by nerves that respond to vasoactive intestinal polypeptide (VIP).
VIP provokes vaginal lubrication in normal women, doubling the total volume of lubrication produced.

Combined oral contraceptive pill

birth control pillthe pillbirth control pills
Oral contraceptives may also increase or decrease vaginal lubrication.
COCPs may increase natural vaginal lubrication.

Estrogen

oestrogenestrogensestrogenic
Older women produce less vaginal lubrication and reduced estrogen levels may be associated with increased vaginal dryness.

Semen

seminal fluidseminalsperm
The normal pH of vaginal fluid is between 3.8 and 4.5, whereas male semen is typically between 7.2 and 7.8 (neutral pH is 7.0).

HIV

human immunodeficiency virusHIV-positiveHIV positive
However, besides making sexual intercourse painful for the female, the practice is believed to increase the risk of transmitting sexually transmitted diseases for both partners, such as HIV, whose risk of transmission is increased by lacerations in the vaginal tissue resulting from the lack of lubrication.
In most cases, HIV is a sexually transmitted infection and occurs by contact with or transfer of blood, pre-ejaculate, semen, and vaginal fluids.

Dry sex

Some people (particularly in Sub-Saharan Africa) practice dry sex, which involves the removal of vaginal lubrication in some way.
Dry sex is the sexual practice of having sexual intercourse without vaginal lubrication.

Mineral oil

petroleum oiloilparaffin oil
Both canola oil and mineral oil are recommended by the American Society for Reproductive Medicine as fertility-preserving types of personal lubricant.
It is recommended by the American Society for Reproductive Medicine for use as a fertility-preserving vaginal lubrication.

Lubrication

lubricatelubricatinglubricated
Vaginal lubrication is a naturally produced fluid that lubricates a woman's vagina.

Ovulation

ovulateovulatingovulated
Vaginal lubrication is always present, but production increases significantly near ovulation and during sexual arousal in anticipation of sexual intercourse.

Blood plasma

plasmaserumblood serum
Plasma from vaginal walls due to vascular engorgement is considered to be the chief lubrication source, and the Bartholin's glands, located slightly below and to the left and right of the introitus (vaginal opening), also secrete mucus to augment vaginal-wall secretions.

Mucus

mucousmucinousslime
Plasma from vaginal walls due to vascular engorgement is considered to be the chief lubrication source, and the Bartholin's glands, located slightly below and to the left and right of the introitus (vaginal opening), also secrete mucus to augment vaginal-wall secretions.

Cervix

cervicalcervical mucuscervix uteri
Near ovulation, cervical mucus provides additional lubrication.

Menstrual cycle

menstrual periodmenstrualmenstruating
The lubricating fluid can vary in consistency, texture, taste, colour, and odour, depending on sexual arousal, the phase of the menstrual cycle, the presence of an infection, certain drugs, genetic factors, and diet.

Sexually transmitted infection

venereal diseasesexually transmitted diseasesexually transmitted diseases
Vaginal fluid is slightly acidic and can become more acidic with certain sexually transmitted diseases.

PH

pH levelneutralpH value
The normal pH of vaginal fluid is between 3.8 and 4.5, whereas male semen is typically between 7.2 and 7.8 (neutral pH is 7.0).

Atrophic vaginitis

vaginal atrophyVulvovaginal atrophyatrophy
While vaginal dryness is considered an indicator for sexual arousal disorder, vaginal dryness may also result from insufficient excitement and stimulation or from hormonal changes caused by menopause (potentially causing atrophic vaginitis), pregnancy, or breast-feeding.