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Labor takes 2 hours longer and infants are born 5 days earlier now (perhaps low vitamin D) – Feb 2014

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

IU Cumulative Benefit Blood level CofactorsCalcium $*/month
200 Better bones for mom
with 600 mg of Calcium
6 ng/ml increase Not needed No effect $0.10
400 Less Rickets (but not zero with 400 IU)
3X less adolescent Schizophrenia
Fewer child seizures
20-30 ng/ml Not needed No effect $0.20
2000 2X More likely to get pregnant naturally/IVF
2X Fewer dental problems with pregnancy
8X less diabetes
4X fewer C-sections (>37 ng)
4X less preeclampsia (40 ng vs 10 ng)
5X less child asthma
2X fewer language problems age 5
42 ng/ml Desirable < 750 mg $1
4000 2X fewer pregnancy complications
2X fewer pre-term births
49 ng/ml Should have
cofactors
< 750 mg $3
6000 Probable: larger benefits for above items
Just enough D for breastfed infant
More maternal and infant weight
Should have
cofactors
< 750 mg $4


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