All of the top 10 happiest countries have sufficient Vitamin D levels (>20 ng)
| Country | Mean 25(OH)D | Status |
|---|---|---|
| Finland | ~65–70 nmol/L | High |
| Denmark | ~50–60 nmol/L | Sufficient–good |
| Iceland | ~55–65 nmol/L | Good |
| Costa Rica | ~72–80 nmol/L | High |
| Sweden | ~65–68 nmol/L | High |
| Norway | ~55–60 nmol/L | Sufficient–good |
| Netherlands | ~50–55 nmol/L | Borderline sufficient |
| Israel | ~55–65 nmol/L | Good |
| Luxembourg | ~50–55 nmol/L | Borderline sufficient |
| Switzerland | ~55–60 nmol/L | Sufficient–good |
Related in VitaminDWiki
- TB 10X less likely to catch if have sufficient vitamin D
- IVF 60 percent more successful if woman had sufficient vitamin D
- Respiratory tract infection eliminated in 36 percent of people by 4000 IU of Vitamin D – RCT
4,000 IU daily or 50,000 once every two weeks gets most people > 30 ng - Quit smoking; 2.2 X more likely if vitamin D level > 20 ng
- Breast Cancer Chemo 35% more likely to be successful if more than 20 ng of Vitamin D – meta-analysis
- Loading dose of 300,000 IU Vitamin D got most above 20 ng in a week
- Long-COVID a month shorter if more than 20 ng of Vitamin D
- Low Mortality if more than 20 ng of Vitamin D (UK Biobank)
- 29 X more likely to die of COVID if less than 20 ng of Vitamin D
- Pregnancy loss 9X more likely if male had less than 20 ng of Vitamin D
- Sleep less than 6 hours: 4X more-likely in men having less than 20 ng of Vitamin D
- 2400 IU of vitamin D needed to get most Northern adults above 20 ng
- Cardiovascular death 1.5X more likely if less than 20 ng of Vitamin D – 22nd meta-analysis
- The happy Vitamin – Vitamin D – a 2 minute video