US adults keep getting heavier– 40 percent obese, 7.7% severely obese (as of 2016) – JAMA April 2018

• Weight loss and Vitamin D, Calcium, and Magnesium
• Dieters lost 5 more pounds if achieved more than 32 ng of vitamin D – RCT March 2014
• Overweight and obese lost 12 lbs with vitamin D in 6 months– RCT May 2015
• Huge increases in Omega-6 to Omega-3 ratio increase risk of obesity, etc. – March 2016
• Obese women deficient in both Vitamin D and Vitamin B12 – March 2018
• Vitamin D stored in fatty tissue may have half life of 12 months (vs 2 months otherwise) – July 2017
  12 month storage was great when people added weight in the Fall and lost weight before Spring

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 441 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

• Normal weight     Obese     (50 ng = 125 nanomole)

Click here for 2014 study