Kidney Stones & Riding - Page 4 - Cycling Mob: Road Cycling, Mountain Biking and More

06-06-2004, 09:53 AM

"Jym Dyer" <[Only registered and activated users can see links. ]> wrote in message
news:[Only registered and activated users can see links. ]

[...]

> =v= When protein goes unused, it breaks down into compounds
> that take calcium from the body. The compounds are excreted
> as urine, passing through the kidneys along the way. This is
> why high-protein fad diets are implicated in osteoporosis and
> kidney stones.

Really? See for example Am J Clin Nutr 2002 Apr;75(4):773-9
Comment in:
Am J Clin Nutr. 2002 Apr;75(4):609-10.
Calcium intake influences the association of protein intake with rates of
bone loss in elderly men and women.
Dawson-Hughes B, Harris SS.
Calcium and Bone Metabolism Laboratory, Jean Mayer US Department of
Agriculture Human Nutrition Research Center on Aging, Tufts University,
Boston, MA 02111, USA. [Only registered and activated users can see links. ]

High protein with insufficient calcium leads to net calcium loss but high
protein with sufficient calcium leads to net calcium gain.

Osteoporosis is multifactorial: genetics, diet, hormones, age, gender, and
lifetime activity (levels and type).

> =v= We have been trained to think of calcium as something we
> get from milk, but too often milk contributes to an excess of
> protein and isn't a helpful source of calcium.

You've been listening to the anti-milk loonies, haven't you. Milk is an
excellent source of calcium and it's extraordinarily hard to get an excess
of protein from a substance that averages about 10 grams per 100ml. IOW, if
you drank half a litre of milk per day you'd average 50 grams of protein.
Big deal. There's not the slightest evidence it causes problems in an
otherwise healthy person. Excess protein is either oxidated or excreted
anyway.

--

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06-06-2004, 10:01 AM

On 06 Jun 2004 09:08:22 -0700, Jym Dyer <[Only registered and activated users can see links. ]> wrote:

>This is
>why high-protein fad diets are implicated in osteoporosis and
>kidney stones.

Cites?

AFAIK, there's no study on implication high protein fad diets with
-anything-.

Plus, what's this about 'high protein' diets. I don't know of any such
diets. ;-p

Low carb may cause the ignorant to =think= 'thus high protein', but that's
not really correct.

-B

-Badger
"World's most dangerous City Bike Path Rider"

06-06-2004, 10:01 AM

On 06 Jun 2004 09:08:22 -0700, Jym Dyer <[Only registered and activated users can see links. ]> wrote:

>This is
>why high-protein fad diets are implicated in osteoporosis and
>kidney stones.

Cites?

AFAIK, there's no study on implication high protein fad diets with
-anything-.

Plus, what's this about 'high protein' diets. I don't know of any such
diets. ;-p

Low carb may cause the ignorant to =think= 'thus high protein', but that's
not really correct.

-B

-Badger
"World's most dangerous City Bike Path Rider"

06-06-2004, 10:01 AM

On 06 Jun 2004 09:08:22 -0700, Jym Dyer <[Only registered and activated users can see links. ]> wrote:

>This is
>why high-protein fad diets are implicated in osteoporosis and
>kidney stones.

Cites?

AFAIK, there's no study on implication high protein fad diets with
-anything-.

Plus, what's this about 'high protein' diets. I don't know of any such
diets. ;-p

Low carb may cause the ignorant to =think= 'thus high protein', but that's
not really correct.

-B

-Badger
"World's most dangerous City Bike Path Rider"

06-06-2004, 10:01 AM

On 06 Jun 2004 09:08:22 -0700, Jym Dyer <[Only registered and activated users can see links. ]> wrote:

>This is
>why high-protein fad diets are implicated in osteoporosis and
>kidney stones.

Cites?

AFAIK, there's no study on implication high protein fad diets with
-anything-.

Plus, what's this about 'high protein' diets. I don't know of any such
diets. ;-p

Low carb may cause the ignorant to =think= 'thus high protein', but that's
not really correct.

-B

-Badger
"World's most dangerous City Bike Path Rider"

06-06-2004, 10:01 AM

On 06 Jun 2004 09:08:22 -0700, Jym Dyer <[Only registered and activated users can see links. ]> wrote:

>This is
>why high-protein fad diets are implicated in osteoporosis and
>kidney stones.

Cites?

AFAIK, there's no study on implication high protein fad diets with
-anything-.

Plus, what's this about 'high protein' diets. I don't know of any such
diets. ;-p

Low carb may cause the ignorant to =think= 'thus high protein', but that's
not really correct.

-B

-Badger
"World's most dangerous City Bike Path Rider"

06-07-2004, 06:58 AM

In article <[Only registered and activated users can see links. ]>,
[Only registered and activated users can see links. ] says...
> On 06 Jun 2004 09:08:22 -0700, Jym Dyer <[Only registered and activated users can see links. ]> wrote:
>
> >This is
> >why high-protein fad diets are implicated in osteoporosis and
> >kidney stones.
>
> Cites?
>
> AFAIK, there's no study on implication high protein fad diets with
> -anything-.
>
> Plus, what's this about 'high protein' diets. I don't know of any such
> diets. ;-p

There are some, but it's been a few years since I've seen one be
popular.

--
Remove the ns_ from if replying by e-mail (but keep posts in the
newsgroups if possible).

06-07-2004, 06:58 AM

In article <[Only registered and activated users can see links. ]>,
[Only registered and activated users can see links. ] says...
> On 06 Jun 2004 09:08:22 -0700, Jym Dyer <[Only registered and activated users can see links. ]> wrote:
>
> >This is
> >why high-protein fad diets are implicated in osteoporosis and
> >kidney stones.
>
> Cites?
>
> AFAIK, there's no study on implication high protein fad diets with
> -anything-.
>
> Plus, what's this about 'high protein' diets. I don't know of any such
> diets. ;-p

There are some, but it's been a few years since I've seen one be
popular.

--
Remove the ns_ from if replying by e-mail (but keep posts in the
newsgroups if possible).

06-07-2004, 06:58 AM

In article <[Only registered and activated users can see links. ]>,
[Only registered and activated users can see links. ] says...
> On 06 Jun 2004 09:08:22 -0700, Jym Dyer <[Only registered and activated users can see links. ]> wrote:
>
> >This is
> >why high-protein fad diets are implicated in osteoporosis and
> >kidney stones.
>
> Cites?
>
> AFAIK, there's no study on implication high protein fad diets with
> -anything-.
>
> Plus, what's this about 'high protein' diets. I don't know of any such
> diets. ;-p

There are some, but it's been a few years since I've seen one be
popular.

--
Remove the ns_ from if replying by e-mail (but keep posts in the
newsgroups if possible).

06-07-2004, 06:58 AM

In article <[Only registered and activated users can see links. ]>,
[Only registered and activated users can see links. ] says...
> On 06 Jun 2004 09:08:22 -0700, Jym Dyer <[Only registered and activated users can see links. ]> wrote:
>
> >This is
> >why high-protein fad diets are implicated in osteoporosis and
> >kidney stones.
>
> Cites?
>
> AFAIK, there's no study on implication high protein fad diets with
> -anything-.
>
> Plus, what's this about 'high protein' diets. I don't know of any such
> diets. ;-p

There are some, but it's been a few years since I've seen one be
popular.

--
Remove the ns_ from if replying by e-mail (but keep posts in the
newsgroups if possible).