Natural fertility

Natural fertility is the fertility that exists without birth control or other medical interventions. The control is the number of children birthed to the parents and is modified as the number of children reaches the maximum. Natural fertility tends to decrease as a society modernizes. Women in a pre-modernized society typically have given birth to a large number of children by the time they are 50 years old, while women in post-modernized society only bear a small number by the same age.[1] However, during modernization natural fertility rises, before family planning is practiced.[2]

Historical populations have traditionally honored the idea of natural fertility by displaying fertility symbols.[3]

  1. ^ Coale AJ (1989-01-01). "Demographic Transition". In Eatwell J, Milgate M, Newman P (eds.). Social Economics. The New Palgrave. Palgrave Macmillan UK. pp. 16–23. doi:10.1007/978-1-349-19806-1_4. ISBN 978-0-333-49529-2.
  2. ^ Romaniuk A (1980-07-01). "Increase in natural fertility during the early stages of modernization: evidence from an African case study, Zaire". Population Studies. 34 (2): 293–310. doi:10.1080/00324728.1980.10410391. PMID 11636724.