Fertility
The term fertility or fertility , outdated or jokingly also loin strength, is understood as the ability of the human body to form fertile sex cells ( gametes ), i.e. sperm cells or egg cells .
Legal term
Legally need for fertility both Beischlafsfähigkeit ( Latin Potentia coeundi , co-e-andi ie) and fertilizing ability (lat. Potentia gene randi ) exist. In the past, this circumstance often came to bear in paternity proceedings when the verification test was not yet available to the present day.
Factors influencing fertility
Several factors influence the fertility of men and women:
- Age of sexual partners: Normally, human fertility begins with puberty and reaches its greatest efficiency at the highest level of physical development (completion of growth), after which it gradually subsides.
- In women, during the so-called menopause, the time of ovulation is initially irregular and then stops completely.
- In men, fertility can persist well into old age. However, the number of motile sperm cells continuously decreases with age. A man's individual fertility can be determined with a spermogram .
- Social factors: cf. Age of childbearing , desire for children , family planning and natural family planning and the targeted use of contraception
- Fertilization on the correct day of the menstrual cycle / ovulation ,
- Hypospadias
- Psyche: arousal and relaxation, libido
- Frequency of sexual intercourse ,
- favorable diet (e.g. folic acid ),
- After-effects of contraceptives ,
- Erectile dysfunction of sexual partners,
- Environmental toxins (e.g. endosulfan or DEHP in food).
See also
literature
- Georg Merzbach: The fertility , edition 19 of the medical public library, published by Carl Marhold, 1905
Individual evidence
- ↑ Duden: https://www.duden.de/rechtschreibung/Lendenkraft [ Lendenkraft] .
- ↑ dejure: from BGB .
- ^ Adolph Christian Heinrich Henk: Textbook of judicial medicine , Verlag F. Dümmler, 1845, page 102ff.
- ^ Zeno from Meyers: Procreation .
- ^ Zeno from Brockhaus: Procreation .
- ↑ HK Biesalski, P. Grimm: Pocket Atlas Nutrition . Thieme Verlag, Stuttgart 2004.
- ↑ Federal Institute for Risk Assessment: Online Information , accessed on July 10, 2019.
- ↑ Ökotest Online: Folic Acid Label for Fortified Food ( Memento of February 14, 2013 in the Internet Archive ) . March 10, 2010.
- ↑ Prinz-Langenohl et al .: [6S] -5-methyltetrahydrofolate increases plasma folate more effectively than folic acid in woman with the homozygous or wild-type 677C → T polymorphism of mrthylenetetahydrofolate reductase. In: British Journal of Pharmacology , July 2009.
- ↑ Nerve toxin in salmon fillet . TAZ, June 17, 2013.
- ↑ Federal Environment Agency: DEHP plasticizer is mainly absorbed through food ( memento from June 23, 2013 in the Internet Archive ) .