Selenium

[Guest guest]

Great Se map!

Here is my two cents worth, it may be of some value, it may only confuse a

more confusing issue.

When I was in college, CPSU, in an animal nutrition class, Se was covered.

Here is what I recall:

Many areas of Ca are high in Se

Se in soil affects Se content of forage crops(and probably crops consumed by

humans too)

When deciding on supplements to give livestock, it is important to know if you

are in a high Se region because Se toxicity can be a major problem. (Cant

remember the symptoms, but that should be easy to find)

With horses and in other cases where forage is transported a great distance,

the Se content of the soil where the hay was grown is the important

factor.(Where does your broccoli come from?)

From what I know of geology, well water from two wells very close together

could tap into very different ground water, depending on well depth and shape

of geologic strata. The Se content of the surface sould be very different

from the Se content way down there.

------------------------------------------------------------------------

[Guest guest]

..can you remind me of what foods contain selenium?

Esther

[Guest guest]

> I've read that bioavailable selenium provides protection against the

> effects of mercury by combining with it.

Possibly... I just checked for foods which are high in selenium,

and it appears that I'm getting that everyday (for me, it would

come from grains, sea vegetables, and sunflower seeds, I would

think).

Brazil nuts are supposed to be the highest food in selenium.

I should buy some and see if they do anything...

Marc

[Guest guest]

> I've read that bioavailable selenium provides protection against the

> effects of mercury by combining with it.

My naturopath just came back from a conference, and the hot topic of the

conference was the impact of selenium on mercury. Evidence shows that

selenium can neutralize mercury, but there is also new evidence that once it

neutralizes mercury, that the neutralized mercury can no longer be detoxed

from our body. So they are debating whether having non-poisonous form of

mercury stuck in body is okay.

Glenn

[Guest guest]

Make sure to get the non-yeast variety of Selenium...Also I understand that it's

good to take ALL of the anti-oxidants as they work best only when taken all

together.

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[Guest guest]

> Is that 600mcg or mg?

>

600 mcg

Thanks for pointing this out.

Glenn

[Guest guest]

> Is that 600mcg or mg?

>

600 mcg

Thanks for pointing this out.

Glenn

[Guest guest]

Hi! Zoe-

the 400 mcg limit applies to the toxic supplements, not to the bioavailable form of selenium found Brazil nuts. Brazil nuts are of course used as a staple where they are grown. The nuts are pressed for oil and the pulp used as a flour for baking...

The secret for choosing selenium is that it must pass through a plant first to become non-toxic and bioavailable...

You probably already know that you can nibble a little of each Brazil nut (use a paring knife if, e.g., you are preparing them for others) and in this way you can detect a moldy tasting one without getting a whole mouthful...As more people are learning of Brazil nuts, however, supplies in the stores move faster and tend to be fresher...

There needs to be abundant selenium in the body not only for production and conversion of thyroid hormones but for the " pacification " of viruses, as well.

....

On 1/23/06, Zoe & <ZOEA@...> wrote:

Too much selenium can be dangerous, so multivitamin and additional supplementation should not exceed 400 micrograms per day. " (p 53) Shomon's book today on The Thyroid Diet (2004),

The best natural source of selenium that I know of is Brazil nuts. I've heard that most of our soils are selenium deficient. So, until I learn otherwise, I'm going to add some selenium to my diet.

Zoe

[Guest guest]

, thanks for your information on Brazil nuts. Do you know if raw Brazil nuts, like other raw nuts, need to be soaked to get rid of the enzyme inhibitors? They are so big, I often wonder if soaking really makes any difference.

Also, I've always wondered if Brazil nuts have to be grown in selenium-rich soils. Are there any grown in selenium-deficient soils? If so, do they still have high levels of selenium? (I really don't expect you to be able to answer these questions. I just wonder about it. But in case anyone does know.... ) )

It's a good reminder that the toxic limits for supplements can be quite different from those for bioavailable forms of the various vitamins and minerals.

Thanks.

Zoe

Re: Selenium

Hi! Zoe-

the 400 mcg limit applies to the toxic supplements, not to the bioavailable form of selenium found Brazil nuts. Brazil nuts are of course used as a staple where they are grown. The nuts are pressed for oil and the pulp used as a flour for baking...

The secret for choosing selenium is that it must pass through a plant first to become non-toxic and bioavailable...

You probably already know that you can nibble a little of each Brazil nut (use a paring knife if, e.g., you are preparing them for others) and in this way you can detect a moldy tasting one without getting a whole mouthful...As more people are learning of Brazil nuts, however, supplies in the stores move faster and tend to be fresher...

There needs to be abundant selenium in the body not only for production and conversion of thyroid hormones but for the "pacification" of viruses, as well.

....

On 1/23/06, Zoe & <ZOEA@...> wrote:

Too much selenium can be dangerous, so multivitamin and additional supplementation should not exceed 400 micrograms per day." (p 53) Shomon's book today on The Thyroid Diet (2004),

The best natural source of selenium that I know of is Brazil nuts. I've heard that most of our soils are selenium deficient. So, until I learn otherwise, I'm going to add some selenium to my diet.

Zoe

[Guest guest]



Smyth has an interesting discussion on selenium, in which he says, "It is therefore important that iodine supplementation precede that of Se."

I am aware that Selenium is important for the conversion of T4 to T3. However, I do not remember anyone else saying that iodine supplementation should precede selenium supplementation. Does anyone else know anything more about this?

The whole paragraph in which the above quote is embedded is, "Administration of Se before correction of the iodine deficiency can disimprove the hypothyroidism by increasing T4 breakdown by Se containing deiodinase enzymes. It is therefore important that iodine supplementation precede that of Se. Deficiency of Se is associated with autoimmune thyroid disease (AITD) perhaps as a result of increased inflammatory activity arising from decreased activity of Se containing antioxidative enzymes. Selenium supplementation or selenomethionine treatment in patients with AITD has been reported to decrease thyroid peroxidase antibody (TPO Ab) concentrations thus enhancing immunocompetence without affecting thyroid hormone levels."

Zoe

Role of iodine in antioxidant defence in thyroid and breast disease -- In files.

P.A. Smyth

[Guest guest]

I eat some Brazil nuts (raw) every day as they are very high in selenium.Brazil nuts have about 2,500 times as much selenium as any other nut. Selenium is a powerful antioxidant which has been proven to protect against heart disease and cancers like prostate cancer.Brazil nuts high selenium content also discourages the ageing process and stimulates the immune system. In a study of patients with early Alzheimers disease, antioxidants - including selenium - boosted mood and mental performance. Like all nuts, brazil nuts are an excellent source of protein and fiber. Brazil nuts are high in minerals including zinc and magnesium, and contain useful amounts of phosphorous, copper and iron.http://www.annecollins.com/diet_foods/brazil-nuts.htmand an excellent article here:http://ods.od.nih.gov/factsheets/selenium.aspexcerpt: People with iodine deficiency may also benefit from selenium supplementation. Iodine deficiency is rare in the U.S., but is still common in developing countries where access to iodine is limited [28]. Researchers believe that selenium deficiency may worsen the effects of iodine deficiency on thyroid function, and that adequate selenium nutritional status may help protect against some of the neurological effects of iodine deficiency [6,7]. Researchers involved in the Supplementation en Vitamines et Mineraux AntioXydants (SU.VI.MAX) study in France, which was designed to assess the effect of vitamin and mineral supplements on chronic disease risk, evaluated the relationship between goiter and selenium in a subset of this research population. Their findings suggest that selenium supplements may be protective against goiter, which refers to enlargement of the thyroid gland [29]. One of the sections is on selenium.  I will quote a few of the ideas about selenium that I found especially thought-provoking.  It is quite clear to me that we need to be paying attention to our selenium levels when supplementing iodine.  I am not clear, however, how much selenium is appropriate when using "orthoiodosupplementation", as recommended by Abraham and Brownstein.  Do we need to be taking more selenium if we are taking more iodine in order to keep them balanced? Zoe

[Guest guest]

Brazil nuts are high in Selenium if they grown in Selenium rich

soil in Brazil. However, many brazil nuts impoted to the US come

from central America, which are grown in Selenium poor soils, so the

nuts are low in Selenium.

Alobar

>

> I eat some Brazil nuts (raw) every day as they are very high in

> selenium.

>

> Brazil nuts have about 2,500 times as much selenium as any other nut.

[Guest guest]

Yes, I did read that about the Brazil nuts too, it is important that

they be grown in selenium rich soil.

> Brazil nuts are high in Selenium if they grown in Selenium rich

> soil in Brazil. However, many brazil nuts impoted to the US come

> from central America, which are grown in Selenium poor soils, so the

> nuts are low in Selenium.

>

> Alobar

[Guest guest]

Thanks, ! I've added these to the links under "selenium". Zoe

I eat some Brazil nuts (raw) every day as they are very high in selenium.

Brazil nuts have about 2,500 times as much selenium as any other nut. Selenium is a powerful antioxidant which has been proven to protect against heart disease and cancers like prostate cancer.

Brazil nuts high selenium content also discourages the ageing process and stimulates the immune system. In a study of patients with early Alzheimers disease, antioxidants - including selenium - boosted mood and mental performance. Like all nuts, brazil nuts are an excellent source of protein and fiber. Brazil nuts are high in minerals including zinc and magnesium, and contain useful amounts of phosphorous, copper and iron.

http://www.annecollins.com/diet_foods/brazil-nuts.htm

and an excellent article here:

http://ods.od.nih.gov/factsheets/selenium.asp

excerpt: People with iodine deficiency may also benefit from selenium supplementation. Iodine deficiency is rare in the U.S., but is still common in developing countries where access to iodine is limited [28]. Researchers believe that selenium deficiency may worsen the effects of iodine deficiency on thyroid function, and that adequate selenium nutritional status may help protect against some of the neurological effects of iodine deficiency [6,7]. Researchers involved in the Supplementation en Vitamines et Mineraux AntioXydants (SU.VI.MAX) study in France, which was designed to assess the effect of vitamin and mineral supplements on chronic disease risk, evaluated the relationship between goiter and selenium in a subset of this research population. Their findings suggest that selenium supplements may be protective against goiter, which refers to enlargement of the thyroid gland [29].

[Guest guest]

Alobar, do you have a reference for this? Zoe

Brazil nuts are high in Selenium if they grown in Selenium richsoil in Brazil. However, many brazil nuts impoted to the US comefrom central America, which are grown in Selenium poor soils, so thenuts are low in Selenium.Alobar

[Guest guest]

Here's the abstract of an article that actually found profound differences in selenium content between different locations ini Brazil:Brazil nuts (Bertholletia excelsa) natively contain very high conoentrations of selenium. Since dietary selenium, including Brazil nuts, have been associated with protection against tumor development in laboratory animal studies, it was of interest to determine the selenium content of the nuts from different nut-growing regions of Brazil. In the work reported, 162 nuts from each of two regions (Acre-Rondonia and Manaus-Belem) were individually analyzed for selenium. The average ± standard deviation and range of selenium concentrations in ppm, fresh weight for nuts from Acre-Rondonia and Manaus-Belem regions were, respectively, 3.06 ± 4.01 (0.03-31.7) and 36.0 ± 50.0 (1.25-512.0). The toxicology of Brazil nut consumption is discussed. There is also wide variation between individual nuts. From the article:The concentration of selenium in individual Brazil nuts varies greatly having been found to range from 0.20 to 253 ppm, fresh weight (Secor and Lisk 1989). It was of interest to determine the average and range of concentrations of selenium in Brazil nuts from the two major nut-producing areas of Brazil. In the work reported here, individual nuts were obtained from the western and central regions of Brazil and analyzed for total selenium content. LizOn Mar 17, 2006, at 3:55 PM, Zoe & wrote:Alobar, do you have a reference for this?  Zoe    Brazil nuts are high in Selenium if they grown in Selenium richsoil in Brazil.   However, many brazil nuts impoted to the US comefrom central America, which are grown in Selenium poor soils, so thenuts are low in Selenium.Alobar

[Guest guest]

Here's an excellent link: http://lpi.oregonstate.edu/infocenter/minerals/selenium/It's an excellent site for all kind of nutrition info..LizOn Mar 17, 2006, at 3:10 PM, Alobar Greywalker wrote:    Brazil nuts are high in Selenium if they grown in Selenium rich soil in Brazil.   However, many brazil nuts impoted to the US come from central America, which are grown in Selenium poor soils, so the nuts are low in Selenium. Alobar > > I eat some Brazil nuts (raw) every day as they are very high in  > selenium. > > Brazil nuts have about 2,500 times as much selenium as any other nut. 

[Guest guest]

Yes, Liz, that is an excellent link and a great site. I've added the link to the section on Selenium. And I've put a special link to the site in the folder on "search resources". Thanks! Zoe

Here's an excellent link: http://lpi.oregonstate.edu/infocenter/minerals/selenium/

It's an excellent site for all kind of nutrition info..

[Guest guest]

Liz, could you post the link to this abstract? It's so tiny I can't read it. Thanks. Zoe

Here's the abstract of an article that actually found profound differences in selenium content between different locations ini Brazil:

Brazil nuts (Bertholletia excelsa) natively contain very high conoentrations of selenium.

Since dietary selenium, including Brazil nuts, have been associated with protection against tumor development in laboratory animal studies, it was of interest to determine the selenium content of the nuts from different nut-growing regions of Brazil. In the work reported, 162 nuts from each of two regions (Acre-Rondonia and Manaus-Belem) were individually analyzed for

selenium. The average ± standard deviation and range of selenium concentrations in ppm, fresh weight for nuts from Acre-Rondonia and Manaus-Belem regions were, respectively, 3.06 ± 4.01 (0.03-31.7) and 36.0 ± 50.0 (1.25-512.0). The toxicology of Brazil nut consumption is discussed.

There is also wide variation between individual nuts. From the article:

The concentration of selenium in individual Brazil nuts varies greatly having been found to range from 0.20 to 253 ppm, fresh weight (Secor and Lisk 1989). It was of interest to determine the average and range of concentrations of selenium in Brazil nuts from the two major nut-producing areas of Brazil. In the work reported here, individual nuts were obtained from the western and central regions of Brazil and analyzed for total selenium content.

Liz

[Guest guest]

It's a fairly old article -- and was probably originally typed - not word processed. Here's the pdf:

LizOn Mar 17, 2006, at 6:57 PM, Zoe & wrote:Liz, could you post the link to this abstract?  It's so tiny I can't read it.  Thanks.  Zoe Here's the abstract of an article that actually found profound differences in selenium content between different locations ini Brazil:Brazil nuts (Bertholletia excelsa) natively contain very high conoentrations of selenium. Since dietary selenium, including Brazil nuts, have been associated with protection against tumor development in laboratory animal studies, it was of interest to determine the selenium content of the nuts from different nut-growing regions of Brazil. In the work reported, 162 nuts from each of two regions (Acre-Rondonia and Manaus-Belem) were individually analyzed for selenium. The average ± standard deviation and range of selenium concentrations in ppm, fresh weight for nuts from Acre-Rondonia and Manaus-Belem regions were, respectively, 3.06 ± 4.01 (0.03-31.7) and 36.0 ± 50.0 (1.25-512.0). The toxicology of Brazil nut consumption is discussed. There is also wide variation between individual nuts. From the article:The concentration of selenium in individual Brazil nuts varies greatly having been found to range from 0.20 to 253 ppm, fresh weight (Secor and Lisk 1989). It was of interest to determine the average and range of concentrations of selenium in Brazil nuts from the two major nut-producing areas of Brazil. In the work reported here, individual nuts were obtained from the western and central regions of Brazil and analyzed for total selenium content. Liz

[Guest guest]

> > >

> >

> > Are you saying Brewers yeast has selenium in the right dosage and

> > type. Great for B vits too.

> >

> > I'm taking alot of extra stuff for adrenal fatigue and if i can

> > double up by taking one thing instead of two that would be great.

> >

> > I think yeast tabs would be cheaper too.

> >

> >

> >

>

[Guest guest]

how much whey do you take a day? i use 1 or 2 scoops a day. i eat only

veggies,organic

meat,fruit with my morning smoothies but i am gaining weight also. how can that

be? no bread,

cake,ice cream..... ???????????

--- <slyan2007@...> wrote:

>

> > > >

> > >

> > > Are you saying Brewers yeast has selenium in the right dosage and

> > > type. Great for B vits too.

> > >

> > > I'm taking alot of extra stuff for adrenal fatigue and if i can

> > > double up by taking one thing instead of two that would be great.

> > >

> > > I think yeast tabs would be cheaper too.

> > >

> > >

> > >

> >

>

>

>

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[Guest guest]

Hi - I'm on 400mcg with 6 drops of Lugol's (37.5mg iodine). I've

been thinking of going to 600mcg, but since I've been fiddling with

levels of other supplements, I've left it alone for now. Didn't want to

change too many things at once.

> Hi

> How much selenium is everyone taking to balance out the high dose

> iodine?

>

>

[Guest guest]

Hi - You might want to also check out some of the prior posts I

did about on the research on how much selenium to take with iodine.

Selenium & Iodine - What's The Right Balance?

iodine/message/10399

> Hi

>

> How much selenium is everyone taking to balance out the high dose

> iodine?

>

>

>

[Guest guest]

> > > > >

> > > >

> > > > Are you saying Brewers yeast has selenium in the right dosage

and

> > > > type. Great for B vits too.

> > > >

> > > > I'm taking alot of extra stuff for adrenal fatigue and if i

can

> > > > double up by taking one thing instead of two that would be

great.

> > > >

> > > > I think yeast tabs would be cheaper too.

> > > >

> > > >

> > > >

> > >

> >

> >

> >

>

>

>

>

>

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> Get new email alerts with the free Toolbar.

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