American College of Nurse‐Midwives continues to state that 600 IU Vitamin D is enough – March 2019

"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"
 Download the PDF from VitaminDWiki

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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

922 items in Pregnancy category

 - see also

• Overview Pregnancy and vitamin D
• Number of articles in both categories of Pregnancy and:Dark Skin 30;   Depression 21;   Diabetes 44;   Obesity 17;  Hypertension 44;   Breathing 35;  Omega-3 44;  Vitamin D Receptor 24 Click here for details
• All items in category Infant/Child 854 items
• Pregnancy needs at least 40 ng of vitamin D, achieved by at least 4,000 IU – Hollis Aug 2017
• 38+ papers with Breastfed etc, in the title
• Call to action – more Vitamin D for pregnancies, loading doses are OK – Holick Aug 2019
• 53+ preeclampsia studies
• 94+ studies with PRETERM in the title
• Fertility problem (PCOS) reduced by vitamin D, etc: many studies 15+
• 94+ Gestational Diabetes
• Caesarean birth much more likely if low Vitamin D - many studies 15+ studies
• Post-partum depression and low Vitamin D - many studies 15+ studies
• Stillbirth reduced by Vitamin D, Zinc, Omega-3 - several studies 5+ studies
• Search VitaminDWiki for "Assisted reproduction" 33 items as of Aug 2022
• Fertility and Sperm category listing has 142 items along with related searches
• (Stunting OR “low birth weight” OR LBW) 1180 items as of June 2020
• Less labor pain if higher level of vitamin D – August 2021
• Healthy pregnancies need lots of vitamin D
• 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
Most were taking 2,000 to 7,000 IU daily for >50% of pregnancy
   Click on hyperlinks for details

Problem	Vit. D 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

• Vitamin D is indispensable for the health of women - editorial June 2022
• ALL of the top 10 health problems of women are associated with low vitamin D
  • Anxiety - Depression   Type 2 Diabetes   Dementia   Ischaemic Heart   Stroke   Breast Cancer   Lung Cancer   COPD   Asthma   Osteoarthritis
• Overview Women and Vitamin D
• Pregnancy category listing has 922 items along with related searches
  • Vitamin D is needed before, during and after Pregnancy – May 2022
  • Pretern Birth - 95 items as of Dec 2022
• Cancer - Breast category listing has 259 items along with related searches
  • Breast Cancer again associated with low vitamin D – 15th meta-analysis Sept 2020
• Fertility and sperm category listing has 142 items along with related searches
• Cancer - Ovarian category listing has 26 items along with related searches
• Calcium and Vitamin D category listing has 227 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
• Poor menstrual cycles 2X more likely if poor vitamin D levels - many studies
• Fertility problem (PCOS) reduced by vitamin D, etc: many studies
• Yeast Infection and Vitamin D - many studies
• Bacterial vaginosis reduced 10 times by 2,000 IU of vitamin D – RCT June 2015
• Recurrent urinary tract infection 4X more likely if low vitamin D – Aug 2013
• Endometriosis treated, and perhaps prevented, by vitamin D - many studies
• Infant-Child category listing has 854 items along with related searches

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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