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The practice of "women swallowing semen" as an intimate act is often surrounded by various rumors, myths, and scientific facts. The so-called "Swallowing sperm"Sperm ingestion" refers to the act of a woman swallowing a man's semen during sexual intercourse. This topic involves not only physical health but also psychological, cultural, and social aspects.

Scientific composition and physiological function of semen

Basic structure of semen

semenSeminal fluid is a fluid produced by the male reproductive system, primarily composed of sperm and seminal plasma. Sperm accounts for less than 11 TP3T of the total semen volume, with the remaining 95 TP3T or more being seminal plasma. Seminal plasma is secreted by multiple glands, including the seminal vesicles (approximately 65 TP3T), prostate gland (approximately 30 TP3T), bulbourethral glands, and epididymis. A normal male ejaculates approximately 3-5 ml of semen per ejaculation; it is grayish-white, weakly alkaline, and has a distinctive fishy odor.

The main components of semen include:

MoistureIt accounts for more than 90% of TP3T and is the main carrier of semen.
Proteins and amino acidsIt contains free amino acids such as choline, spermine, and spermine, totaling approximately 1.25 grams per 100 milliliters. These components help maintain sperm motility.
Minerals and inorganic saltsExamples of essential minerals include calcium (25 mg/dl), magnesium (14 mg/dl), potassium (89 mg/dl), and zinc (14 mg/dl). Zinc is particularly important, as it protects sperm chromatin and is also believed by some studies to have a teeth-whitening effect.
enzymesThese include enzymes such as acid phosphatase, lactate dehydrogenase, and hyaluronidase, which help sperm penetrate the egg.
carbohydrateIt mainly contains fructose (approximately 224 mg/100 ml), which provides energy for sperm.
Hormones and other active substancesSuch as testosterone, oxytocin, progesterone, estrogen, endorphin, prolactin, melatonin, nerve growth factor (NGF), arginine, and transforming growth factor beta (TGF-β).

The main physiological function of these components is to transport and nourish sperm, promoting the fertilization process. The slightly alkaline nature of semen helps neutralize the acidic environment of the vagina, making it easier for sperm to survive.

Nutritional value assessment of semen

Many rumors claim that semen is rich in nutrients and can be used as a supplement. However, scientifically, the nutritional value of semen is limited. Compared to everyday food, the volume of semen in a single ejaculation is only 3-5 ml, and its protein content is less than 1 gram, far lower than a bowl of milk (250 ml contains 8 grams of protein) or soy milk (250 ml contains 11 grams of protein). While minerals such as zinc are present, the amount is negligible and cannot provide any nutritional benefit. Semen is more of a reproductive aid fluid than a food source.

Studies show that hormones and proteins in semen may affect the human body through absorption, but most of them are broken down in stomach acid when swallowed, resulting in low absorption efficiency. Sublingual absorption or vaginal contact may be more effective, but this still needs scientific verification.

Potential health benefits of swallowing semen

Although swallowing semen is not a medically recommended practice, some studies have pointed to its potential benefits. These are detailed below based on scientific literature.

Anti-depression and mood improvement

A study from the State University of New York at Albany showed that women exposed to semen experienced fewer symptoms of depression. Semen contains...Nerve growth factor(NGF) can repair the myelin sheath in the brain and ensure nerve function; oxytocin and progesterone have anti-anxiety effects; endorphins enhance feelings of happiness. Another survey of 293 women found that women who swallowed semen had lower depression scores. This may be because semen hormones affect the brain's chemical balance.

In detail, NGF deficiency is associated with severe depression, and research from the Department of Neurology at E-Da Hospital in Taiwan has confirmed its antidepressant effects. After swallowing semen, these substances may be absorbed through the mucous membranes and enter the bloodstream, improving mood. However, the effects vary from person to person and are not a treatment or replacement.

Sleep aid and stress relief

Semen contains melatonin, which can regulate the sleep cycle. Studies indicate that women who swallow semen...Sleep qualityHigher levels may be due to the sedative effects of prolactin and oxytocin. Research from the University of Saskatchewan in Canada has found that NGF stimulates hormone secretion, indirectly aiding sleep.

Reduce pregnancy complications and risk of miscarriage

The most famous study is from Leiden University Medical Center in the Netherlands: a comparison of 234 women found that those who regularly engaged in oral sex (including swallowing semen) had a lower rate of recurrent miscarriage (571 TP3T vs 731 TP3T). This is attributed to the fact that TGF-β and proteins in semen strengthen the immune system, increasing tolerance to male antigens and reducing maternal rejection of the fetus. Swallowing semen can also reduce the risk of preeclampsia and prevent morning sickness.

A University of Auckland study adds that swallowing semen allows the body to memorize the male's DNA, reducing discomfort during pregnancy. However, the sample size is small and cannot prove causality.

Beauty and Anti-aging

Rumors claim that swallowing semen can whiten skin and slow aging. Semen contains arginine, which has antioxidant effects and may extend lifespan (25%) and reduce the risk of liver cancer (a study from Texas A&M University). Zinc is said to whiten teeth. However, applying it to the skin carries high risks and lacks medical evidence.

Other benefits include increased libido (due to testosterone) and improved fertility (by protecting sperm chromatin), but these are mostly indirect.

These benefits require further research to confirm, and swallowing semen is not a necessary method.

Myth and Fact Refutation

Common myths

Beauty and skin careRumors that swallowing semen can whiten skin and remove blemishes are scientifically unfounded. Semen contains little protein and cannot replace skincare products.
Tonify the kidneys and nourish the bloodThis is an ancient superstition, lacking modern evidence.
Treatment for insomnia and calming the nervesSome hormones can help, but they are not a panacea.
Anti-aging and immune-boostingArginine has potential, but the quantity is insufficient.

Swallowing semen is a personal choice, with both benefits and risks. Science shows limited benefits, but myths abound. Approach it rationally and prioritize safety.

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