Vitamin D recommendations: 30 to 50 ng/mL - many organizations, countries

Related in VitaminDWiki

• Is 50 ng of vitamin D too high, just right, or not enough which has the following

Vitamin D	Treats
150 ng	Multiple Sclerosis ✻
80 ng	Cluster Headache ✻ Reduced office visits by 4X ✻
70 ng	Sleep ✻
60 ng	Breast Cancer death reduced 60% Preeclampsia RCT
50 ng	COVID-19 T1 Diabetes Fertility Psoriasis Infections Review Infection after surgery
40 ng	Breast Cancer 65% lower risk Depression ACL recovery Hypertension Asthma?
30 ng	Rickets

✻ Evolution of experiments with patients, often also need co-factors

• Revisiting Vitamin D Guidelines – Holick has the following chart

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30 to 60 ng

1. Vitamin D consensus by 9 Mexican groups: 30 to 60 ng
2. Another Vitamin D consensus for 40-60 ng – India
3. French pediatric consensus: 30 – 60 ng of Vitamin D
4. Vitamin D Consensus, Brazil – Many people need 30 – 60 ng
5. Vitamin D: need 30 to 60 ng (50,000 IU weekly) RCT (Russia)
6. Expert consensus: Osteoporosis needs Vitamin D 30-50
7. Need 40 to 60 ng of Vitamin D – 48 scientists call for action – 2015

30 to 100 ng

• 25 experts recommended Vitamin D levels 30 - 100 ng - Nov 2009

40-70 ng

1. Saudi study defines normal Vitamin D level to be 50 to 70 ng (diabetes, etc.)
2. Vitamin D: 40-70 ng is optimal, sometimes more is needed - Grant, Sunil, Pawel, Cheng
3. Vitamin D (40-70 ng) in Children’s Health – review

40+ ng

1. High-dose Vitamin D and Non-Skeletal Health: need >40 ng
2. Prostate Cancer death 40 percent less likely if 40 ng level of vitamin D – Meta-analysis
3. Colon Cancer 30 percent higher risk if low vitamin D (optimally need ~40 ng)
4. 80+ health problems substantially reduced when Vitamin D is above 40 ng
5. Many Chronic Health Diseases and Infections care controlled by 40 ng of Vitamin D – Sunil
6. Hypertension risk decreased 10X by increasing vitamin D levels to more than 40 ng
7. Autoimmune diseases fought by Vitamin D, especially if have more than 40 ng
8. Asthma may be treated by Vitamin D if more than 40 ng for 12 months
9. Pregnant women need at least 40 ng of Vitamin D (Wagner, genes)
10. 4X fewer stress fractures in college athletes if more than 40 ng of vitamin D
11. Live longer if have more than 40 ng of Vitamin D (gene analysis of 10,500 people)
12. Back pain associated with less than 40 ng vitamin D
13. 40-50 ng level of Vitamin D often recommended

50+ ng

1. Many diseases prevented if Vitamin D level higher than 50 ng -Sunil
2. Type 1 Diabetic inflammation reduced by 50 ng of Vitamin D
3. 50 ng level of Vitamin D proven to fight many diseases - Whittle

70+ ng

1. Coimbra Protocol (using Vitamin D) is safe and effective for Multiple Sclerosis and Autoimmune diseases

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How many IUs needed to get % of adults to 20, 30, 40 ng

The table is a tiny subset of Claude AI PDF - June 2026

Goal (serum 25(OH)D)	50% of healthy non-obese	97% of healthy non-obese	97% of healthy (incl. obese)
20 ng/mL (50 nmol/L)	~500–600 IU	~3,900 IU ~50,000 IU every 2 weeks	~7,000–8,900 IU ~50,000 IU every week
30 ng/mL (75 nmol/L)	~1,000–1,300 IU	~6,200 IU ~50,000 IU every ~week	~10,000–12,000 IU
40 ng/mL (100 nmol/L)	~2,000 IU	~9,100 IU	~13,000–16,000 IU

Various things which decrease the IUs needed include:

• Eat fatty D with a fatty meal,
• Use one of the 4 types of vitamin D that do not need fat,
• People with poor guts should use gut-friendly vitamin D
• ADD cofactors that increase vitamin D levels
  ( Magnesium, Omega-3, Zinc, Boron, ec.)

People with existing health problems often need higher doses/levels.
Often, treatment requires double the dose as prevention