Labor takes 2 hours longer and infants are born 5 days earlier now (perhaps low vitamin D)

NIH study finds women spend longer in labor now than 50 years ago April 2012

• first stage of labor had increased by
  • 2.6 hours for first-time mothers.
  • 2.0 hours if previously given birth

• epidural injections were used in more than half of recent deliveries, compared with 4 percent of deliveries in the 1960s. The study authors noted that epidural anesthesia is known to increase delivery time, but said it doesn’t account for all of the increase.

• Cesarean delivery was 4X more often (12 % vs. 3 %).

• Infants born 5 days earlier

• Compared birth data of 1959-1966 with 2002 - 2008.

Childbirth Study Sees Longer Labor as Normal New York Times Feb 2014

• normal second stage of labor is now longer than it was decades ago

Vitamin D is not mentioned in either of the studies

Also, could not easily find any studies for or against the assocation with vitamin D

See also VitaminDWiki

• Pregnancy category list

• Infant-Child category list

• Overview Pregnancy and vitamin D has the following summary

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