7000 IU vitamin D was not enough to reduce obese tissue – RCT Jan 2013

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Investigations of the Anti-inflammatory Effects of Vitamin D in Adipose Tissue: Results from an In Vitro Study and a Randomized Controlled Trial.

Horm Metab Res. 2013 Jan 15.
Wamberg L, Cullberg KB, Rejnmark L, Richelsen B, Pedersen SB.
Department of Endocrinology and Internal Medicine MEA, Aarhus University Hospital, Aarhus, Denmark.

Inflammation is a key feature of obesity and type 2 diabetes. The active vitamin D metabolite, 1,25-dihydroxyvitamin D [1,25(OH)2D], modulates the inflammation in vitro. We studied whether inflammation in adipose tissue (AT) cultures could be reduced by incubation with 1,25(OH)2D in vitro, or by oral treatment with vitamin D in vivo in obese subjects with low plasma levels of 25-hydroxyvitamin D. Samples of subcutaneous AT were stimulated with IL-1β to induce inflammation. In the in vitro study, samples were concomitantly incubated with or without 1,25(OH)2D, and analyzed for mRNA and protein levels of inflammatory markers IL-6, IL-8, and MCP-1.

In the in vivo study, samples of subcutaneous AT from obese subjects obtained before and after treatment with 7 000 IU of vitamin D daily or placebo in a randomized controlled trial were stimulated with IL-1β. The samples were analyzed for AT gene expression and compared with plasma markers of inflammation. In the in vitro study, concomitant incubation with 1,25(OH)2D reduced mRNA levels of MCP-1 by 45% (p=0.01), of IL-6 by 32% (p=0.002), and of IL-8 by 34% (p=0.03), and reduced secretion of IL-8 protein by 18% (p=0.005). In vivo treatment with vitamin D did not reduce AT expression or circulating levels of MCP-1, IL-6, or IL-8. 1,25(OH)2D has significant anti-inflammatory effects in AT in vitro. However, a similar reduction in AT and systemic inflammation cannot be obtained by oral treatment with vitamin D in obese subjects.
 Download the PDF from Sci-Hub via VitaminDWiki

26 week trial

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VitaminDWiki – Overview Obesity and Vitamin D contains:

• 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)

Click here for 2014 study

Obesity category is associated with Diabetes 35, Intervention 33, Infant-Child 30, Youth 24, Metabolic Syndrome 21, Skin - Dark 20, Virus 19, Women 16, VDR 16, Pregnancy 15, etc.

Calcium 15, Genetics 15, Omega-3 13, Magnesium 11, Intervention - non daily 10, Liver 9, How much Vitamin D 9, Cardiovascular 9, Antibiotics, probiotics 8, Cancer 7, Deficiency 7, Sports 7, Seniors 7, Hypertension 6, Loading dose 4, Vit D Binding Protein 4, Breathing 4, Bone - Health 4, Gut 4, Multiple Sclerosis 4, Predict Vitamin D 4, UV 4

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