Prevalence of vitamin D deficiency and insufficiency among 460,537 children in 825 hospitals from 18 provinces in mainland China
Medicine (Baltimore) . 2020 Oct 30;99(44):e22463. doi: 10.1097/MD.0000000000022463.
Chunsong Yang 1 2, Meng Mao 3, Li Ping 3, Dan Yu 4
Items in both categories Deficiency and Orient are listed here:
- 82% of Chinese hospital staff had less than 12 ng of Vitamin D (65% of patients)– May 2024
- Low vitamin D in Malaysia (85 percent less than 30 ng) – meta-analysis Nov 2022
- Vitamin D Deficiency in children in SE Asia – Oct 2022
- Vitamin D levels in new borns are so low that they are considering supplementing to prevent Rickets (Japan) – July 2022
- Majority of South Asian children and youths have low vitamin D (85 pcnt of neonates) – March 2022
- Half of Mongolian schoolchildren have less than 10 ng of vitamin D – Nov 2021
- Most Chinese have less than 20 ng level of Vitamin D - meta-analysis Aug 2021
- Less COVID-19 infection, mortality in countries with higher Vitamin D (Asia in this case) – May 2021
- Chinese COVID-19 study – 80 pct of severe cases had low Vitamin D, all asymptomatic cases had OK Vit D – Oct 13, 2020
- Half of Chinese adolescents have less than 20 ng of VItamin D - Oct 2020
- Lower Respiratory Tract Infection in Infants reduced 5.9 X by daily 600 IU of vitamin D (China) - March 2020
- Higher Vitamin D in US seniors if older, female, not smoke, but LOWER for each in China – Dec 2019
- Vitamin D levels from lowest to highest: Middle East, China. India, S EU. N EU – Dec 2019
- Vitamin D levels continue to fall in Korea– June 2018
- Beijing women have low vitamin D - 89 percent have less than 20 ng - June 2015
- Vitamin D deficiency in China – only 1 in 18 have even 30 ng, fewer if young or female – Feb 2015
- Vitamin D deficiency is a major global public health problem – Maps Nov 2013
- Chinese have very low vitamin D - July 2013
- Vitamin D in Japanese women: 91 percent have less than 30 ng– 2012
- Beijing extremely vitamin D deficient even in the fall: 10 ng – April 2013
- Virtually all Chinese teens at 30 degree N have less than 30 ng of vitamin D – Feb 2012
- Low levels of vitamin D in Japanese office workers – July 2011
- Hypothesis – China air conditioning disease is the result of less vitamin D – March 2011
- Low D in developing countries – less than 5 ng in some children in China – Oct 2010
Items in both categories Deficiency and Youths are listed here:
- Country noticed that their youths need more Vitamin D (Norway this time) – Feb 2024
- Majority of South Asian children and youths have low vitamin D (85 pcnt of neonates) – March 2022
- Child exposed to smoke is 1.5 X more likely to have low vitamin D – Oct 2018
- Reasons for children having low vitamin D (proposed by 10 societies) - May 2018
- Many US kids have less than 40 ng of Vitamin D – 99 out of 100 blacks, 91 out of 100 whites – Jan 2017
- Vitamin D levels low in early teens - Nov 2014
- Kids have recently reduced both cholesterol and vitamin D – Aug 2012
- Delima: Most youths are vitamin D deficient – what to do – April 2012
- Virtually all young Koreans had less than 30 ng of vitamin D – 2012
- Ways to increase teen vitamin D
- Virtually all Chinese teens at 30 degree N have less than 30 ng of vitamin D – Feb 2012
- 75 percent of children in NE US had less than 20 ng of vitamin D in winter – Dec 2011
- Children have PTH problems when vitamin D is less than 15 ng – Nov 2011
- 80 percent of teens in Europe had less than 30 ng of vitamin D – Aug 2011
- Vitamin D insufficiency in UK youths – 37X more likely if dark skin – July 2011
- Hardly any children had enough vitamin D before bone surgery – April 2011
- Red Alert – one in three pre-teens in Tehran had less than 5 ng of vitamin D – Feb 2011
- 90 percent of Canadian youth less than 30 ng vitamin D – Oct 2010
- Could growing pains in a child be a vitamin D deficiency – Sept 2010
- Low vitamin D among black teens – March 2009
- Teens increasingly indoors - especially if dark skin
Deficiency of Vitamin D category starts with the following
- Overview Deficiency of vitamin D
- Many reasons why vitamin D deficiency has become epidemic
- 23 of the 40 reasons are recent
- Many doctors continue to believe 2,000 IU of vitamin D is max (Hungary in this case)– Dec 2021
- 73 percent of US infants still do not even get 400 IU of Vitamin D - June 2020
- Vitamin D levels are dropping rapidly – what you need to do
- 4 Reasons why Vitamin D levels are crashing
- Update Reasons for Low Vitamin D and what to do with a concise table
- Air Pollution reduces Vitamin D production - many studies
- Vitamin D levels in 56 countries (many have less than 20 ng) – 2021
- Trends in vitamin D status around the world – Nov 2021
- Vitamin deficiency in US military – Vitamin D is the most prevalent and is growing rapidly – June 2021
- Smoking reduces vitamin D - many studies 77 studies as of Feb 2024
- Low Vitamin D is worse for your health than smoking
- Many categories of people are at High Risk of low vitamin D -
67 studies - 26 health factors increase the risk of COVID-19 – all are proxies for low vitamin D
- Diseases arising from depletion are cured by repletion - Hippocrates 400 BC
Download the PDF from VitaminDWiki
This study was conducted to estimate the 25-hydroxyvitamin D (25 (OH)D) levels and explore factors related to vitamin D deficiency/insufficiency. This was a multicenter, hospital-based, cross-sectional observational study. Children admitted to hospitals for health examination were included for vitamin D measurement and the 25(OH)D concentration results were categorized into 3 groups: deficiency (<30 nmol/L), insufficiency (30-50 nmol/L), and sufficiency (>50 nmol/L). Four lakh sixty thousand five hundred thirty-seven children in 825 hospitals from 18 provinces participated in this study. The prevalence of vitamin D deficiency, insufficiency, and sufficiency were 6.69%, 15.92%, and 77.39%, respectively. Vitamin D deficiency was the most severe in the central region, followed by the north, and southwest regions; however, data for the western region were lacking.Logistic regression showed that vitamin D status was worse in girls, newborns, and those visiting the hospital in the winter. In conclusion, the prevalence of vitamin D deficiency is high among Chinese children and adolescents. Studies on population estimates, cost-effective screening strategies, and interventions for high-risk cases are needed.
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