300,000 IU loading dose of vitamin D does not help the obese much – Jan 2017

Note: 400,000 is a nice loading dose for non-obese
Obese might need 1,000,000 IU spread-out over a week
300,000 IU single loading dose for people with <12.5 ng Vitamin D

Note by VitaminDWiki: 52 weeks seems too long
See also VitaminDWiki

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)

Click here for 2014 study
Obese need more Vitamin D (non-loading dose)

• Normal weight     Obese     (50 ng = 125 nanomole)

Click here for 2014 study
Overview Loading of vitamin D contains the following

Vitamin D loading dose (stoss therapy) proven to improve health overview
If a person is or is suspected to be, very vitamin D deficient a loading dose should be given

• Loading = restore = quick replacement by 1 or more doses
• Loading doses range in total size from 100,000 IU to 1,000,000 IU of Vitamin D3
  • = 2.5 to 25 milligrams
• The size of the loading dose is a function of body weight - see below
  • Unfortunately, some doctors persist in using Vitamin D2 instead of D3
• Loading may be done as quickly as a single day (Stoss), to as slowly as 3 months.
  • It appears that spreading the loading dose over 4+ days is slightly better if speed is not essential
• Loading is typically oral, but can be Injection (I.M,) and Topical
• Loading dose is ~3X faster if done topically or swished inside of the mouth
  • Skips the slow process of stomach and intestine, and might even skip liver and Kidney as well
• The loading dose persists in the body for 1 - 3 months
  • The loading dose should be followed up with on-going maintenance dosing
  • Unfortunately, many doctors fail to follow-up with the maintenance dosing.
• About 1 in 300 people have some form of a mild allergic reaction to vitamin D supplements, including loading doses
  • it appears prudent to test with a small amount of vitamin D before giving a loading dose
  • The causes of a mild allergic reaction appear to be: (in order of occurrence)
  • 1) lack of magnesium - which can be easily added
  • 2) allergy to capsule contents - oil, additives (powder does not appear to cause any reaction)
  • 3) allergy to the tiny amount of D3 itself (allergy to wool) ( alternate: D3 made from plants )
  • 4) allergy of the gut to Vitamin D - alternative = topical

Items in both categories Obesity and Loading Dose are listed here: