Effect of vitamin D supplementation along with weight loss diet on meta-inflammation and fat mass in obese subjects with vitamin D deficiency: a double-blind placebo-controlled randomized clinical trial.
Clin Endocrinol (Oxf). 2018 Sep 24. doi: 10.1111/cen.13861. [Epub ahead of print]
Lotfi-Dizaji L1, Mahboob S2, Aliashrafi S1, Vaghef-Mehrabany E1, Ebrahimi-Mameghani M3, Morovati A1.
1 Student Research Committee, Faculty of Nutrition and Food Science, Tabriz University of Medical Sciences, Tabriz, Iran.
2 Nutritional Biochemistry, School of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.
3 Nutrition Research Center, Faculty of Nutrition & Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.
|Vitamin D||Placebo||p value|
|kilogram after||92.61||94.86||0.038 (good)|
VitaminDWiki suggests significantly more weight loss if any of the following
- Started Vitamin D about 8 weeks before diet
- Used more vitamin D
- Used a gut-friendly form of Vitamin D
- Started with Vitamin D loading dose
- Included exercise - even walking
- Intervention lasted longer
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: 126 trials for vitamin D intervention of obesity as of Dec 2017
- 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: Those with darker skins were more likely to be obese Sept 2014
- 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
current study is not a news item
- Lost more weight on diet if also took 50,000 IU of vitamin D weekly – RCT Sept 2018
- Weight loss of 26 lbs if diet, walk and 100,000 IU of vitamin D bi-weekly– July 2018
- Half of obese black teens achieved at least 30 ng of Vitamin D with 5,000 IU daily – June 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
- Fatty liver disease 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 – Jan 2013
- 5700 IU vitamin D improved various growth factors in overweight people – Oct 2012
PDF is available free at Sci-Hub 10.1111/cen.13861
BACKGROUND & AIMS:
Low serum 25-hydroxy-vitamin D (25OHD) is common in obese people. Obesity is associated with a state of low-grade inflammation (meta-inflammation). There is increasing evidence indicating that vitamin D has anti-adipogenic activity and immunoregulatory effect. This study aimed to assess the effect of vitamin D supplementation on meta-inflammation and fat mass in obese subjects with vitamin D deficiency.
MATERIALS AND METHODS:
In this double-blind placebo-controlled randomized clinical trial, 44 obese subjects with vitamin D deficiency (25OHD < 50 nmol/L) were assigned into vitamin D (a weight reduction diet + bolus weekly dose of 50000 IU vitamin D) or placebo group (weight reduction diet + edible paraffin weekly) for 12 weeks. Weight, fat mass and serum levels of 25OHD, Calcium, Parathyroid hormone (PTH), Monocyte chemoattractant protein 1 (MCP-1), Interleukin-1β (IL-1β), and Toll like receptor 4 (TLR-4) were assessed before and after the intervention.
Vitamin D supplementation resulted in significant increase of serum 25OHD level (P<0.001), and significant decrease in PTH (P<0.001), MCP-1 (p<0.05), IL-1β (p< 0.05), and TLR-4 (P<0.05); compared to the baseline values in vitamin D group. Weight, BMI and fat mass decreased in both groups (P<0.05). Between the groups, there were significant decrease in weight, fat mass and serum MCP-1 concentrations and significant increase in serum 25OHD and PTH concentrations after intervention with vitamin D supplementation compared to placebo (p<0.05).
Improvement in vitamin D status in obese subjects with vitamin D deficiency in combination weight loss diet resulted in weight, fat mass, and MCP-1 decrease. Weight loss and vitamin D supplementation may act synergistically to reduce levels of meta-inflammation.