Re: Re Doses of sunshine, vit A, Zn, and ionizing radiation (WAG?)

[John Jacobus <crispy_bird@YAHOO.COM>]

You say 0.1 rem is insufficient.  Since the average

background radiation exposure is 0.350 rem effective

dose per year, why should people need more than they

are getting now?  



--- Howard Long <hflong@pacbell.net> wrote:

> John,

> Not a WAG, but an order of magnitude estimate:

>  10x 25 mg Zn/day would make anybody sick and 1/10

> not supply trace mineral

> needs of anybody,

> 100,000 U vit A /day give anybody liver damage and

> only 1,000 U/day give

> night blindness, low resistance to infection, etc,

> 

> Similar findings for ionizing radiation:

> 1000 rad/year likely bad (my health physicist

> patient with arm melanoma

> calculated 4500 rem to arm over 2 years from holding

> films for combat area

> x-rays in WW2)

> 0.1 rad/year likely insufficient (populations show

> more cancer, less

> longevity).See Muckerheide rad-sci-1@wpi.edu

. . .



=====

-- John

John Jacobus, MS

Certified Health Physicist

e-mail:  crispy_bird@yahoo.com



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