Kidney Stones & Riding - Page 3 - Cycling Mob: Road Cycling, Mountain Biking and More

06-06-2004, 09:08 AM

> The lab results came back as calcium oxalate. The Urologist
> is telling me I need to cut down on my calcium intake with
> things like green leafy veggies, chocolate (oh no!) and nuts.

=v= I am not a doctor or urologist, so nothing I write can even
be considered a second opinion, but this goes counter to what
I've been told and have read for many years. Kidney stones
recur if you don't change your diet, but the diet advice you
got was the opposite of the advice I got! So maybe another
professional opinion is called for.

=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.

=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. The body needs
calcium, so it's going to need to get it from somewhere, and
the usual advice is: dark green leafy vegetables. (Spinach,
the most popular dark green leafy vegetable, is high in oxalate
to the point where it's not a good source of calcium either,
but others such as chard, collards, and kale are just fine.)

=v= FWIW, I had kidney stones 20 years ago and changed my diet,
and I haven't had them since.
<_Jym_>

P.S.: Cranberry juice is excellent for the health of your
kidneys and urinary tract. Most brands have a ton of bad
corn syrup in them, though. The best value is to buy it in
concentrate form and make your own.

06-06-2004, 09:33 AM

"howitzer" <[Only registered and activated users can see links. ]> wrote in message
news:3d388e6a.0406040416.24ecf938@posting.google.c om
> Hi All
>
> I've been road cycling hard core for about 4 years now and I just had
> my first experience with a kidney stone (not fun). The lab results
> came back as calcium oxalate. The Urologist is telling me I need to
> cut down on my calcium intake with things like green leafy veggies,
> chocolate (oh no!) and nuts. I'm not convinced this is the problem

It probably isn't. That advice was once de rigeur but these days is
considered outdated. Get a second opinion.

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06-06-2004, 09:33 AM

"howitzer" <[Only registered and activated users can see links. ]> wrote in message
news:3d388e6a.0406040416.24ecf938@posting.google.c om
> Hi All
>
> I've been road cycling hard core for about 4 years now and I just had
> my first experience with a kidney stone (not fun). The lab results
> came back as calcium oxalate. The Urologist is telling me I need to
> cut down on my calcium intake with things like green leafy veggies,
> chocolate (oh no!) and nuts. I'm not convinced this is the problem

It probably isn't. That advice was once de rigeur but these days is
considered outdated. Get a second opinion.

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06-06-2004, 09:33 AM

"howitzer" <[Only registered and activated users can see links. ]> wrote in message
news:3d388e6a.0406040416.24ecf938@posting.google.c om
> Hi All
>
> I've been road cycling hard core for about 4 years now and I just had
> my first experience with a kidney stone (not fun). The lab results
> came back as calcium oxalate. The Urologist is telling me I need to
> cut down on my calcium intake with things like green leafy veggies,
> chocolate (oh no!) and nuts. I'm not convinced this is the problem

It probably isn't. That advice was once de rigeur but these days is
considered outdated. Get a second opinion.

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06-06-2004, 09:33 AM

"howitzer" <[Only registered and activated users can see links. ]> wrote in message
news:3d388e6a.0406040416.24ecf938@posting.google.c om
> Hi All
>
> I've been road cycling hard core for about 4 years now and I just had
> my first experience with a kidney stone (not fun). The lab results
> came back as calcium oxalate. The Urologist is telling me I need to
> cut down on my calcium intake with things like green leafy veggies,
> chocolate (oh no!) and nuts. I'm not convinced this is the problem

It probably isn't. That advice was once de rigeur but these days is
considered outdated. Get a second opinion.

--

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Q: What is the most annoying thing on Usenet?

06-06-2004, 09:33 AM

"howitzer" <[Only registered and activated users can see links. ]> wrote in message
news:3d388e6a.0406040416.24ecf938@posting.google.c om
> Hi All
>
> I've been road cycling hard core for about 4 years now and I just had
> my first experience with a kidney stone (not fun). The lab results
> came back as calcium oxalate. The Urologist is telling me I need to
> cut down on my calcium intake with things like green leafy veggies,
> chocolate (oh no!) and nuts. I'm not convinced this is the problem

It probably isn't. That advice was once de rigeur but these days is
considered outdated. Get a second opinion.

--

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Q: What is the most annoying thing on Usenet?

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, 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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Q: What is the most annoying thing on Usenet?

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.

--

A: Top-posters.
Q: What is the most annoying thing on Usenet?

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.

--

A: Top-posters.
Q: What is the most annoying thing on Usenet?