[neverdem]

Vitamin D3 supplementation during weight loss: a double-blind randomized controlled trial.

CONCLUSIONS: Vitamin D3 supplementation during weight loss did not increase weight loss or associated factors compared with placebo; however, women who became replete experienced greater improvements.

Who decided what level is replete? Maybe 2000 IU oral vitamin D3/d is too modest a dose? The race of the subjects was ignored.

[a fool in paradise]

What about “Vitamin D” production from exposure to the sun?

[rmlew]

So women who took supplementation and reached the threshold for normal levels after being deficient lost more weight.
As a dieting man with a Vitamin D deficiency, I'd like to see a study on men. Either way, maybe I should take more than 2800 iu daily.

[Carry_Okie]

I've read that D₃ should be taken in conjunction with K₂; else calcium more easily forms arterial plaque. Thoughts?

[rjsimmon]

Poor conclusions in the study. 19 lbs lost over 12 months versus 12 lbs lost over 12 months is statistically insignificant. Considering that both groups were on a reduced calorie/moderate exercise program, you could have said that water was the contributing factor (good luck finding a placebo for that, though). Without identifying other contributing factors such as race, family history, or restricting to the exact same diet, this study is worthless.

[RegulatorCountry]

The likely reason a non-specific term such as “replete” was used, is that the optimal dosage would vary from one individual to the next due to physiology and genetic heritage. What “works” for one may not work for another, and vice versa. Supplementation with vitamins, minerals, herbs, etc. is like that. There can be a fair amount of trial and error.

[Black Agnes]

‘Replete’ differs from one to another. If you’re supplementing you need to have your levels tested. Some people need 2000IU, some need 5000IU, some need 15000IU.

[Cicero]

I’m not a doctor, but I think 2000 IU is a pretty low dose. I take at least twice that much, and it has really turned a lot of health problems around.

It’s especially important to take Vitamin D3 in the winter, if you don’t get much sun. And in the summer, too, if you use a lot of sunscreen and avoid tanning.

Just my opinion. I’m not a doctor. But my doctor was converted to Vitamin D after I sent him a few articles on it.

[windcliff]

ping

[Veto!]

I love it when the medical profession FINALLY starts looking at nutritional supplements.

My very distinguished doc looked at the list I brought him of all the supplements I take. “They won’t hurt you,” he said. Ten years later, he’s undergoing experimental treatment for his life threatening melanoma, and he just wrote a paper on the benefits of a vegan diet and supplementation with — gasp — vitamins.

Here’s some good info on Vitamin K from Thorne, an excellent supplement company:

http://www.thorne.com/altmedrev/.fulltext/14/3/284.pdf