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Men who like to swallow semen during fellatio may be concerned about what they are consuming as it relates to caloric intake and nutritional substances.
The average ejaculate contains aboutonia, ascorbic acid, blood-group antigens, calcium, chlorine, cholesterol, choline, citric acid, creatine, deoxyribonucleic acid (DNA), fructose, glutathione, hyaluronidase, inositol, lactic acid, magnesium, nitrogen, phosphorus, potassium, purine, pyrimidine, pyruvic acid, sodium, sorbitol, spermidine, spermine, urea, uric acid, vitamin b12, and zinc.
The caloric content of an average ejaculate is estimated to be approximately 15 calories.
The ejaculation includes several fluids. Testicle fluids, which includes sperm cells,
makes up about 5% of the ejaculate. The purpose of testicle fluid is to transport the
sperm cells to the prostate. Seminal Fluid, which comes from the seminal vesicles, makes
up about 60% of the ejaculate and provides nutrient for the sperm cells. Prostate fluid
is created by the prostate gland and makes up about 30% of the ejaculate. The prostate
fluid is added to the ejaculate to protect the sperm by neutralizing the acidity of the
vaginal tract. Pre-cum accounts for about 5% of the ejaculation and comes from the cowper's
glands. The purpose of pre-cum (aside from providing lubrication) is to neutralize the
acidity of the inside of you penis. The urethral glands produce urethral mucous which
accounts for less than 1% of the ejaculate. The purpose of urethral mucous is to lubricate
the urethra in preparation for the ejaculation.