Exposure To Exogenous Estrogen Through Intake Of Commercial Milk Produced From Pregnant Cows

burtlancast

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An explanation on why i get pounding headaches from cow milk ?
 

schultz

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My mom is always worried about milk because of this. I try to tell her... "You take supplemental estrogen, and you're worried about milk!?" Not to mention that it's estradiol.

Most of the estrogen is estrone sulfate. It is already bound and ready to be excreted in the feces so it will likely just go right through a person. It may be possible for it to be deconjugated and absorbed, but I'm guessing in a relatively healthy person eating low PUFA, daily carrot, low endotoxin, the estrone in milk is not even close to being a problem. We all know blood levels can be misleading as far as estrogen goes. Perhaps the progesterone from the milk is knocking it out of cells and into the blood, hence the elevated blood levels.

Anyway there is a lot of better information than what I have given in other posts on this site. Maybe more people can chime in on this?
 
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You know if the milk factory doesn't have to have twenty-five gallons from each animal a day then they probably won't have to buy those brands of cow. It's your wallet and your blood.
 

burtlancast

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Here's a 2012 study investigating for the first time (!) the level of estrogens in goat milk, in comparaison with cow milk.

Comparison of estrone and 17β-estradiol levels in commercial goat and cow milk
https://mega.co.nz/#!cJwm0BrD!Uvlh2qPE_ ... 2QDz2mrnec
For those concerned with E1and E2 consumption, the data from this study indicates
that goat milk is safer to consume than all forms of regular cow milk. Goat milk is consistently lower in both conjugated and unconjugated estrogens.

These results show that goat milk has less biologically active EM and shorter half-lives for its conjugated estrogens than all other milk forms tested in this study.

Free (unconjugated) estrogens in full goat milk vs 6 types of cow milk:
image.jpg

(full goat milk (on the far right) compared with 6 types of cow milk)


Total (conjugated + unconjugated) estrogens in full goat milk vs 6 types of cow milk:
image.jpg

The total forms of E1 (estrone) and E2 (17B-estradiol) for goat milk were dramatically lower compared with regular and organic milk, with a concentration of 60.65 pg/mL.

Given the surprisingly low concentrations of conjugated an unconjugated E1 and E2 in regular goat milk, this milk would be a healthy dietary alternative for individuals concerned with steroid hormone consumption.
 

charlie

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:bump
 

Nicholas

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burtlancast said:
Here's a 2012 study investigating for the first time (!) the level of estrogens in goat milk, in comparaison with cow milk.

Comparison of estrone and 17β-estradiol levels in commercial goat and cow milk
https://mega.co.nz/#!cJwm0BrD!Uvlh2qPE_ ... 2QDz2mrnec
For those concerned with E1and E2 consumption, the data from this study indicates
that goat milk is safer to consume than all forms of regular cow milk. Goat milk is consistently lower in both conjugated and unconjugated estrogens.

These results show that goat milk has less biologically active EM and shorter half-lives for its conjugated estrogens than all other milk forms tested in this study.

Free (unconjugated) estrogens in full goat milk vs 6 types of cow milk:
image.jpg

(full goat milk (on the far right) compared with 6 types of cow milk)


Total (conjugated + unconjugated) estrogens in full goat milk vs 6 types of cow milk:
image.jpg

The total forms of E1 (estrone) and E2 (17B-estradiol) for goat milk were dramatically lower compared with regular and organic milk, with a concentration of 60.65 pg/mL.

Given the surprisingly low concentrations of conjugated an unconjugated E1 and E2 in regular goat milk, this milk would be a healthy dietary alternative for individuals concerned with steroid hormone consumption.

So after really quick research, goat milk appears to be lower in pufa (slightly), higher in vitamin A, much higher in potassium...
 

charlie

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jyb

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oxidation_is_normal said:
https://raypeatforum.com/forums/posts/74427/ I also wonder how much fermented dairy products have been reduced in their hormonal content.

It does. Kefir bacteria degrades growth hormones. I'm not sure about oestrogen but it seems to do something against breast cancer so maybe. It also degrades casein, which in my opinion is a good thing.
 
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burtlancast

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Nicholas said:
So after really quick research, goat milk appears to be lower in pufa (slightly) , higher in vitamin A, much higher in potassium...

I'm afraid not. :?
Goat milk has 89% less Alpha s1 Casein than cow's milk and is therefore less allergenic. Goat milk has smaller fat globules and higher levels of medium chain fatty acids than cow's milk; 10% less lactose; and when proteins clump up in the stomach, they have a much softer bolus [curd], making it much more digestible than cow's milk. Goat milk has a greater amount of essential fatty acids such as linoleic and arachidonic acid than cow's milk as well as significantly greater amounts of vitamin B-6, vitamin A, and niacin. Goat milk is a far superior source of potassium, making it react in an alkaline way in the body, whereas cow milk reacts in a slightly acid way. [Benefits of Goat Milk vs. Cow Milk]
Goat milk contains twice the healthful medium chain fatty acids, such as capric and caprylic acids, which are highly antimicrobial. It is a rich source of the trace mineral selenium, with 27% more than cow milk. Goat milk also has 13% more calcium, 25% more vitamin B-6, 47% more vitamin A, 134% more potassium, three times more niacin, and is four times higher in copper than cow's milk. [The Benefits of Raw and Fermented Goat's Milk and Cow's Milk]
In relation to minerals, goat milk has higher levels of phosphorus, iron, magnesium, and substantially higher levels of manganese than cow's milk. [Natural Minerals Nutrition from Goat Milk]
Goat milk could help bone diseases such as anemia and bone demineralization. Goat milk helps with the digestive and metabolic utilization of minerals such as iron, calcium, phosphorus and magnesium. [University of Granada study]
Goat milk has lower levels of estrogen metabolites which are believed to be associated with cancers of the reproductive system.

If only we could somehow remove the estrogens and PUFAS in goat milk without touching at anything else, it would be a perfect food.
 

jyb

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burtlancast said:
If only we could somehow remove the estrogens and PUFAS in goat milk without touching at anything else, it would be a perfect food.

The pufa content seems to vary a lot depending on feed and lifestyle. So, it seems you could find some goat milk lower in some pufa than in some cow milk: http://www.intechopen.com/books/milk-pr ... -health#T1

It's even hard to estimate the omega content in cow milk - there is a large variation in CLA versus omega pufa in cow milks (much lower in omega for green pastured). Ray seems to like CLA (and scientific studies too).
 

schultz

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Thanks for those graphs Burtlan. Very interesting indeed!

According to cronometer, goats milk has 3.6g of PUFA for every 100g of fat and whole milk, 3.25% has 6g of PUFA for every 100g of fat.

Studies I read on ruminant animals are always trying to figure out how to increase the amount of PUFA in milk. It's ridiculous. It usually involves basically poisoning their digestion or somehow getting the food to bypass digestion.

PUFA is not only bad for the animals digestion, it actually kills the bacteria in their rumen.

"Adding unsaturated fats and oils (such as vegetable and fish oils) can reduce rumen pH and shift VFA patterns. Unsaturated fatty acids can reduce fibre digestibility, decrease rumen pH, be toxic to fibre digesting bacteria, and/or coat fibre particles reducing fibre digestion. Processing of oilseeds (such as grinding or extruding) can rupture the cell wall of the seed and release the oil in the rumen."
Gut Efficiency: The Key Ingredient in Ruminant Production edited by Sylvie Andrieu, David Wilde
 

forterpride

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What about just drinking nonfat milk (no pufas right?) and then getting all your fat from coconut oil?
 

raypeatclips

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Here's a 2012 study investigating for the first time (!) the level of estrogens in goat milk, in comparaison with cow milk.

Comparison of estrone and 17β-estradiol levels in commercial goat and cow milk
https://mega.co.nz/#!cJwm0BrD!Uvlh2qPE_ ... 2QDz2mrnec


Free (unconjugated) estrogens in full goat milk vs 6 types of cow milk:
image.jpg

(full goat milk (on the far right) compared with 6 types of cow milk)


Total (conjugated + unconjugated) estrogens in full goat milk vs 6 types of cow milk:
image.jpg

Interesting. It would have been good if they used more than 1 type of goat milk. I wonder how skim goat milk would compare to all of them.
 

stevrd

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@haidut What do you make of this study?

Here is my take on this:

http://sciencedrivennutrition.com/hormones-milk/
Here is a good article from Brad Dieter, PhD, dispelling some of the myths of drinking milk, including estrogen. Now he does cite studies in rats showing that drinking milk with high estrogen content did nothing to their serum estrogen levels. Unfortunately he did not address the study posted on this thread. It was not until rats consumed 1000 times the estrogen of non-pregnant lactating cows that their serum estrogen levels were elevated. Whether rats metabolism of estrogen in food is different than in humans, I don't know.

One thing that he mentions is the fact that most hormones ingested through food have no biological activity. Oral anabolic steroids need to have a methyl group attached to oppose the liver's ability to detoxify them. Otherwise there will be no discernable increase in serum steroid levels.

Now with study on this thread, there is no question that urine levels of estrogen will be high, as the liver will glucoronidate it to be sent to the kidneys for excretion. So in that respect, I don't think that the authors of the study (or anybody for that matter) can seriously discuss the increased urine concentrations as if it is a problem, as it is irrelevant. The only thing that truly matters is whether a food actually increases blood levels of estrogen.

The problem with this study is it is not a randomized controlled study with a control group. Several studies show that the very act of eating anything can transiently lower testosterone/alter hormone profiles. See below...

Habito RC, Ball MJ (2001) Postprandial changes in sex hormones after meals of different composition. Metabolism 50:505–511

Caronia LM, Dwyer AA, Hayden D, Amati F, Pitteloud N, Hayes FJ.Abrupt Decrease in Serum Testosterone Levels After an Oral Glucose Load in Men: Implications for Screening for Hypogonadism. Clin Endocrinol (Oxf). 2012 Jul 17.

Meikle AW, Stringham JD, Woodward MG, Mcmurry MP (1990) Effects of a fat-containing meal on sex hormones in men. Metabolism 39:943–946.

So with the available research showing that eating basically any food transiently changes hormone levels, one has to ask the question, is the study that this thread is questioning simply showing postprandial changes of hormone levels in serum, while showing urinary excretion of the estrone sulfate from the milk of pregnant lactating cows? Are the estrogen levels in the milk drinkers any different than what we would observe in people eating any other type of food?

The fact that drinking milk in the study lowers LH/gonadotropins doesn't mean much either, when considered in the context that postprandial LH/gonadotropins will be lowered after eating basically any foods as well. Fasting increases LH and then eating a meal decreases it.

Another thing is that changes in serum hormones may have more to do with the concentration of solutes in serum in relation to fluid/albumin levels, which change based on normal activities like exercise, eating, etc. Differences in blood volume, dilation and constriction of vessels can have an observable effect on hormone profiles in serum, but this does not mean that there was actually an increase or decrease, just that the ratio of hormones to blood volume changed.

So I would say that the increased serum estrogen in the subjects of this study is concerning. But whether it is from the dairy itself or just eating food in general is yet to be determined, since there is no control group in the study. A couple of interesting things that the researchers could have done is to (1) make it randomized and controlled (2) include a control for one of the following: a control that was isocalorically matched and protein capped but ate no dairy products at all, a control that consumed the same amount of milk but in lactating non-pregnant cows, a control that drank the same amount of non-dairy milk products (soy, almond, etc).

Without a randomized controlled study that includes a control, these authors cannot seriously make any conclusions.

Finally, I would say that ultimately acute hormone responses to food are not what is important. It is basal hormone levels after a fast that matters. It's the same as saying that the postprandial thermic effect of food trumps the basal metabolic rate, which it doesn't. Since the study in question is not testing waking estrogen/testosterone levels after fasting, we don't know whether or not drinking milk has any true lasting effect on hormone levels.
 
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