YAY for semen! I grabbed some fun, random jizz info on the web:

"Seminal fluid... is composed of dozens of chemical components. The
base of seminal fluid is primarily fructose (sugar) and proteins, with
many other trace minerals and substances. Here's a listing of some of
semen's ingredients:

Sugars: Fructose, sorbitol, inositol
Proteins and amino acids: glutathione, deoxyribonucleic acid (DNA), creatine
Minerals: Phosphorus, zinc, magnesium, calcium, potassium
Vitamins: Ascorbic acid (vitamin C), vitamin B12, choline
Hormones: Testosterone, prostaglandins
Body byproducts: Lactic acid, urea, uric acid, nitrogen...

Semen is a source of highly concentrated, high-quality protein. In
dietary terms, it's comparable to egg whites or gelatin. Besides
protein, semen contains high concentrations of some minerals, such as
zinc, and trace amounts of other important nutrients, like calcium and
magnesium."

"The caloric content of an average ejaculate is estimated to be approximately 15 calories."

"The amount of nutritive substance in semen varies as much as 100 percent from sample to sample; the amount of fructose (one of the main sugars found in honey) in semen varies over a range of 400 percent. Finally, the volume of ejaculate itself varies from 3 to 5 cubic centimeters--not exactly a precise measurement."

"Sex is a emotionally satisfying and absolutely to boosting activity; however, I just can't comprehend the fact of semen becoming an anti-depressant drug for women? Sounds absurd? Well, according to article of R. Persaud of NewScientist.com, semen literally makes women "happy". Gordon Gallup, a psychologist in the State University of New York, led a study dividing 293 female students into groups according to the frequency of condom usage and happiness assessment results using Beck Depression Inventory (BDI) scale. The result of the study reveals that women whose partners never used condoms scored the average 8 on the BDI scale, while those who often used them acquired the score of 10.5 and those always used condoms scored 11.3. Undoubtedly, those who never had sex with their partners yet scored 13.5. Indeed, semen can actually cause such mood change since it contains different mood-altering hormones, such as testosterone, estrogen, follicle-stimulating hormone, lutenizing hormone, prolactin and various types of prostaglandins."

"In one typical ejaculation (approximately one teaspoon), semen already contains 150 mg of protein, 11 mg of carbohydrates, 6 mg fat, 3 mg cholesterol, 7% US RDA potassium and 3% US RDA copper and zinc." less