Effects of Vitamin D Supplementation on General and Central Obesity: Results From 20 Randomized Controlled Trials Involving Apparently Healthy Populations
Ann Nutr Metab. 2020 Jul 9;1-12. doi: 10.1159/000507418.
Leizhen Duan 1, Ling Han 1, Qin Liu 1, Yili Zhao 1, Lei Wang 1, Yan Wang 2
It is amazing how many review studies ignor amount of Vitamin D given
Overview Obesity and Vitamin D contains the following summary
- FACT: People who are obese have less vitamin D in their blood
- FACT: Obese need a higher dose of vitamin D to get to the same level of vit D
- FACT: When obese people lose weight the vitamin D level in their blood increases
- FACT: Adding Calcium, perhaps in the form of fortified milk, often reduces weight
- FACT: 168 trials for vitamin D intervention of obesity as of Dec 2021
- FACT: Less weight gain by senior women with > 30 ng of vitamin D
- FACT: Dieters lost additional 5 lbs if vitamin D supplementation got them above 32 ng - RCT
- FACT: Obese lost 3X more weight by adding $10 of Vitamin D
- FACT: Those with darker skins were more likely to be obese Sept 2014
- OBSERVATION: Low Vitamin D while pregnancy ==> more obese child and adult
- OBSERVATION: Many mammals had evolved to add fat and vitamin D in the autumn
- and lose both in the Spring - unfortunately humans have forgotten to lose the fat in the Spring
- SPECULATION: Low vitamin D might be one of the causes of obesity – several studies
- SUGGESTION: Probably need more than 4,000 IU to lose weight if very low on vitamin D due to
risk factors such as overweight, age, dark skin, live far from equator,shut-in, etc. - Obesity category has
442 items See also: Weight loss and Vitamin D - many studies Child Obesity and Vitamin D - many studies Obesity, Virus, and Vitamin D - many studies
Obese need more Vitamin D- Normal weight Obese (50 ng = 125 nanomole)
- Normal weight Obese (50 ng = 125 nanomole)
Obesity is associated with low Vitamin D (and treated by D as well) – Aug 2019 has the following
Fast weight loss by Obese Adults: Summary of the data as of Sept 2019
1) 50,000 IU Vitamin D weekly for at least 6 months
If gut problems, should use a gut-friendly form of vitamin D
2) Add calorie restriction diet and light exercise after ~2 months*
* Vitamin D levels must be above 30ng/ml to help with weight loss
* Start losing weight 2 months sooner if take a 50,000 IU daily for a week
3) More weight loss if also add Magnesium or cofactors
30% Improved Vitamin D response with Magnesium - a Vitamin D Cofactor
Note: Magnesium reduces weight loss by itself as well
20% improved vitamin D response if also add Omega-3 a Vitamin D Cofactor
Note: Omega-3 reduces weight loss by itself as well
4) More weight loss if also improve activation of Vitamin D Receptor
Vitamin D Receptor activator: 0-30% improved Vitamin D response
Obesity 1.5 X more likely if poor Vitamin D Receptor – meta-analysis Nov 2019
Update Dec 2019 - Dr. Greger plant-based eating (not diet) for both weight loss and health.
His book does not mention Vitamin D nor AdenovirusItems in both categories Obesity and Intervention are listed here:
- Overweight needed more EPA (4 grams) to fight depression – RCT Aug 2022
- Response to Vitamin D varies with genes (3,000 IU, weight loss in this RCT) – March 2022
- Weight loss on low-calorie diet: 7 lbs more lost if got lots of Vitamin D – June 2021
- Overweight elderly respond well to 3600 IU Vitamin D daily for a year – RCT May 2021
- Little weight loss in obese children from very small amount of vitamin D (1200 IU) – RCT April 2020
- 20,000 IU of Vitamin D weekly gave many benefits – RCT Aug 2019
- 2.3 X more weight loss in those who had low vitamin D levels and took some – Dec 2019
- Obese lost 3X more weight with Vitamin D - July 2018
- Severely Obese not helped much by 50,000 IU of vitamin D weekly for 8 weeks – RCT June 2019
- Gut genes related to important disease changed in Obese with 2,000 IU for 12 weeks – May 2019
- Obese responded to weekly vitamin D better than non-obese – RCT March 2018
- Daily, monthly Vitamin D had similar great benefits, more than 6 months needed – RCT Dec 2018
- Obese lost more weight on diet if added 50,000 IU of vitamin D weekly – many RCTs
- Lost 19 lbs more if add vitamin D to calorie restriction and walking program– July 2018
- Half of obese black teens achieved at least 30 ng of Vitamin D with 5,000 IU daily – June 2018
- Response by obese to weekly 50,000 IU of Vitamin D – May 2018
- Severe Non-Alcoholic fatty liver disease treated by Omega-3 – RCT April 2018
- Waist size reduced 3 cm by Vitamin D in those with Metabolic Syndrome – Jan 2017
- Less weight gain if add Vitamin D, even if have a high fat diet (in rats) – RCT Dec 2017
- NAFLD in children nicely treated by combination of Vitamin D and Omega-3 – RCT Dec 2016
- Increased Testosterone and Erectile function, decreased weight with Vitamin D – March 2017
- 5,000 IU daily or 50,000 IU Vitamin D weekly repleted many dark skinned adolescents – RCT Dec 2015
- Overweight and obese lost 12 lbs with vitamin D in 6 months– RCT May 2015
- 24 ng lower response to Vitamin D due to obesity, low initial Vitamin D, and genetics – RCT Feb 2015
- Diabetic hypertension reduced with Vitamin D and Calcium – RCT March 2015
- Dieters lost 5 more pounds if achieved more than 32 ng of vitamin D – RCT March 2014
- 50,000 IU vitamin D weekly increased levels by 52 ng normally, but only 28 ng if obese – Oct 2013
- 50,000 IU vitamin D 1-3 times per week helped obese patients in rehab. – May 2013
- Obesity not reduced with 7,000 IU vitamin D daily – April 2013
- Higher BMI decreased response to 700 IU vitamin D – RCT 2008
- Insulin sensitivity in obese adolescents greatly improved with 4000 IU of vitamin D - RCT April 2013
- 7000 IU vitamin D was not enough to reduce obese tissue – RCT Jan 2013
- 5700 IU vitamin D improved various growth factors in overweight people – Oct 2012
Download the PDF from VitaminDWiki
Background: The obesity pandemic has been paralleled by a high prevalence of vitamin D deficiency (VDD). There is growing epidemiological evidence linking low vitamin D status with obesity events. In addition, observational studies also show that obesity may increase the risk of VDD. However, there is insufficient knowledge to understand whether there is a causality between the two. Moreover, the impact of vitamin D supplementation on obesity indices has shown inconsistent outcomes.
Objective: This meta-analysis aimed to assess whether vitamin D supplementation modified general and central obesity indices in apparently healthy populations.
Methods: A systematic retrieval of relevant randomized controlled trials (RCTs) was undertaken using Pubmed, Embase, Web of Knowledge and Chinese National Knowledge Infrastructure databases. The pooled weighted mean difference (WMD) and 95% confidence intervals (CI) were used to assess the changes in body mass index (BMI), waist circumference (WC), waist-to-hip ratio (WHR) and 25-hydroxyvitamin D (25OHD) from baseline.
Results: Twenty RCTs involving 3,153 participants reporting either BMI, WC, WHR or 25(OH)D met the inclusion criteria. When compared with placebo, vitamin D supplementation had no significant decreases in BMI (WMD = -0.09 kg/m2, 95% CI -0.19 to 0.01, p = 0.08), WC (WMD = -0.71 cm, 95% CI -1.58 to 0.16, p = 0.112) or WHR (WMD = 0.00, 95% CI -0.01 to 0.01, p = 0.749). However, in the subgroups of females, Asia region studies and intervention duration ≥6 months, a beneficial and significant reduction in BMI and WC was noted (all p < 0.026). On the other hand, pooled results showed that there was a significant increase in serum 25(OH)D levels (WMD = 13.20 ng/mL, 95% CI 9.83-16.58, p < 0.001) after vitamin D intervention. No publication bias was found in our study.
Conclusions: Overall, supplementation with vitamin D produced no significant effect on the BMI, WC or WHR of healthy adults.
Obesity not helped by daily vitamin D (summary of 20 RCTs using 100 IU to 8,000 IU) – July 2020Printer Friendly Follow this page for updates6089 visitors, last modified 10 Jul, 2020, This page is in the following categories (# of items in each category)Attached files
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