natural fertility

См. также в других словарях:

• Natural fertility — method of birth control is a concept developed by French historical demographer Louis Henry to refer to the level of fertility that would prevail in a population that makes no conscious effort to limit, regulate, or control fertility, so that… …   Wikipedia

• Fertility awareness — Background Birth control type Behavioral First use 1950s (mucus) mid 1930s (BBT) 1930 (Knaus Ogino) Ancient (ad hoc) Failure rates (first year) Perfect use Symptoms based: 1 3% Calendar based: 5 9% …   Wikipedia

• Fertility — is the natural capability of giving life. As a measure, Fertility Rate is the number of children born per couple, person or population. This is different from fecundity, which is defined as the potential for reproduction (influenced by gamete… …   Wikipedia

• Fertility preservation — is the effort to help cancer patients retain their fertility, or ability to procreate. Research into how cancer affects reproductive health and preservation options are growing, sparked in part by the increase in the survival rate of cancer… …   Wikipedia

• Natural killer cell — Latin lymphocytus K Code TH H2.00.04.1.02006 Natural killer cells (or NK cells) are a type of cytotoxic lymphocyte that constitute a major component of the innate immune system. NK cells play a major role in the rejection of …   Wikipedia

• Natural childbirth — Intervention MeSH D009321 Natural Childbirth is a philosophy of childbirth that is based on the notion that women who are adequately prepared are innately able to give birth without routine medical interventions. Natural childb …   Wikipedia

• Fertility clinic — Fertility clinics are staffed medical clinics that assist couples, and sometimes individuals, who want to become parents but for medical reasons have been unable to achieve this goal via the natural course. Clinics apply a number of tests and… …   Wikipedia

• Natural family planning — This article is about methods of family planning approved by the Catholic Church. For a more general use of the term, see fertility awareness. Natural family planning Background Birth control type behavioral First use Ancient: calendar, LAM mid… …   Wikipedia

• Natural birth control — Infobox Birth control name = Natural birth control width = caption = bc type = natural birth control date first use = Ancient (abstinence, withdrawal, herbal) to modern (FA, heat based, LAM) rate type = Failure| perfect failure% = Various typical …   Wikipedia

• Fertility (soil) — Soil fertility is the characteristic of soil that supports abundant plant life. In particular the term is used to describe agricultural and garden soil.Fertile soil has the following properties: *It is rich in nutrients necessary for basic plant… …   Wikipedia

• natural selection — the process by which forms of life having traits that better enable them to adapt to specific environmental pressures, as predators, changes in climate, or competition for food or mates, will tend to survive and reproduce in greater numbers than… …   Universalium