Nursing frequency, gonadal function, and birth spacing among !Kung hunter-gatherers.
Science
; 207(4432): 788-91, 1980 Feb 15.
Article
en En
| MEDLINE
| ID: mdl-7352291
Mothers among !Kung hunter-gatherers nurse briefly and frequently, with brief intervals between nursing bouts (mean +/- standard error, 13.19 +/- 1.28 minutes). The low levels of 17 beta-estradiol and progesterone in the serum of the mother are correlated with infant's age and with interbout interval, but not with total nursing time. Maternal gonadal function is apparently suppressed by a timing-dependent, prolactin-mediated effect of breast stimulation. Interbout interval may be a key variable in lactation infertility. If so, it solves the puzzle of !Kung birth spacing.
Buscar en Google
Banco de datos:
MEDLINE
Asunto principal:
Intervalo entre Nacimientos
/
Lactancia
/
Periodo Posparto
/
Amenorrea
/
Conducta Materna
Tipo de estudio:
Prognostic_studies
Límite:
Female
/
Humans
/
Pregnancy
País/Región como asunto:
Africa
Idioma:
En
Revista:
Science
Año:
1980
Tipo del documento:
Article