"Women younger than 70 years of age and women who are pregnant or breastfeeding need to get 600 IU (International Units) of vitamin D daily"
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Overview Pregnancy and vitamin D has the following summary

IU	Cumulative Benefit	Blood level	Cofactors	Calcium	$*/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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Pregnancy category starts with

688 items in Pregnancy category

 - see also

• Overview Pregnancy and vitamin D
• Healthy pregnancies need lots of vitamin D
• Number of articles in both categories Pregnancy and:
  Dark Skin 23;   Depression 15;   Diabetes 38;   Obesity 11;  Hypertension 33;   Breathing 28;  Omega-3 25;  Vitamin D Receptor 13
• All items in category Infant/Child 540 items
• breastfed 887 items as of Jan 2018
• Preeclampsia 825 items as of Jan 2018
• Pre-term 4710 items as of Dec 2018
• "polycystic ovary syndrome" OR PCOS 303 items as of Jan 2018
• Gestational Diabetes
• c-section OR "caesarean section" (various spellings) 802 items as of Aug 2018
• postpartum depression 208 items as of Aug 2018
• Search VitaminDiiki for MISCARRIAGE OR "Spontaneous abortion" 541 as of June 2018
• Search VitaminDWiki for "Assisted reproduction" 33 items as of Feb 2017
• Fertility and Sperm category listing has 98 items along with related searches
• (Stunting OR “low birth weight” OR LBW) 505 items as of Jan 2018
• Ensure a healthy pregnancy and baby - take Vitamin D before conception
  

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Healthy pregnancies need lots of vitamin D has the following summary

Problem	Reduces	Evidence
0. Chance of not conceiving	3.4 times	Observe
1. Miscarriage	2.5 times	Observe
2. Pre-eclampsia	3.6 times	RCT
3. Gestational Diabetes	3 times	RCT
4. Good 2nd trimester sleep quality	3.5 times	Observe
5. Premature birth	2 times	RCT
6. C-section - unplanned	1.6 times	Observe
Stillbirth - OMEGA-3	4 times	RCT - Omega-3
7. Depression AFTER pregnancy	1.4 times	RCT
8. Small for Gestational Age	1.6 times	meta-analysis
9. Infant height, weight, head size      within normal limits		RCT
10. Childhood Wheezing	1.3 times	RCT
11. Additional child is Autistic	4 times	Intervention
12.Young adult Multiple Sclerosis	1.9 times	Observe
13. Preeclampsia in young adult	3.5 times	RCT
14. Good motor skills @ age 3	1.4 times	Observe
15. Childhood Mite allergy	5 times	RCT
16. Childhood Respiratory Tract visits	2.5 times	RCT

RCT = Randomized Controlled Trial

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Women category starts with the following

• Pregnancy category listing has 688 items along with related searches
• Infant-Child category listing has 540 items along with related searches
• Cancer - Breast category listing has 209 items along with related searches
• Fertility and sperm category listing has 98 items along with related searches
• Cancer - Ovarian category listing has 18 items along with related searches
• Calcium and Vitamin D category listing has 182 items along with related searches
  Excessive Calcium supplementation is very bad for the body, and not needed by your bones
• Search for HRT OR "hormone replacement therapy" 301 items as of Jan 2019
• Search for PCOS 248 as of April 2018
• Search for VAGINOSIS 271 as of April 2018
• Search for UTI OR "URINARY TRACT INFECTION" 367 items as of Jan 2019
• PMS decreased when Vitamin D was added
• Endometriosis treated, and perhaps prevented, by vitamin D and Omega-3

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• Every one of top 10 female health problems is associated with low Vitamin D
  • It is highly unlikely that any of those helath problems could be hleped by 600 IU of Vitamin D
• Overview How Much vitamin D
• 7100 IU (50000 weekly) got most women to 30 ng of vitamin D - Aug 2012
• All preteen aged girls in India taking 2,000 IU of vitamin D got levels above 20 ng – RCT Nov 2018
• Bone loss during black pregnancies – 4000 IU of vitamin D was not enough – Dec 2017
• 4,000 IU of Vitamin D is OK - 19 organizations agree - 2018
• Vitamin D Recommendations around the world - IU and ng has the following