[devere]

I am very skeptical of the theory propounded by this article. I take 2000 IU of vitamin D every day during the winter, and I haven’t missed a day’s work due to illness since November 1991. If my immune system is “suppressed”, it’s a surprise to me. Dr. J. J. Cannell reports that when an influenza epidemic swept through his mental hospital, only a ward of patients receiving daily 2000 IU vitamin D supplements were immune:
http://www.freerepublic.com/focus/f-chat/1929828/posts

The weakness of the Dr. Marshall’s theory is that it is based on speculative reasoning rather than sound epidemiology.

[ThePythonicCow]

The weakness of the Dr. Marshall’s theory is that it is based on speculative reasoning rather than sound epidemiology.

Argument by innuendo, I'm afraid. Both reasoning and epidemiology are essential tools, as I suspect you agree.

Have you seen the research that ambulance drivers cause automobile accidents? There is an irrefutable statistical correlation between one and the other <grin>?

Thanks by the way for your link to:

http://www.freerepublic.com/focus/f-chat/1929828/posts

Good link.

[Bobibutu]

“I take 2000 IU of vitamin D every day during the winter”

So do I - and ditto - since I started.

[Varda]

You hit the nail on the head. I would be suspicious of anyone who makes an outlandish statement such as this, “Supplemental vitamin D has been used for decades, and yet the epidemics of chronic disease, such as heart disease and obesity, are just getting worse.”