NURSING FREQUENCY, GONADAL-FUNCTION, AND BIRTH SPACING AMONG KUNG HUNTER-GATHERERS
NURSING FREQUENCY, GONADAL-FUNCTION, AND BIRTH SPACING AMONG KUNG HUNTER-GATHERERS
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DOI：
10.1126/science.7352291
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发表时间：
1980-01-01
期刊：
影响因子：
56.9
通讯作者：
WORTHMAN, C
中科院分区：
文献类型：
--
作者：
KONNER, M;WORTHMAN, C
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 17β-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.
