Estrogen and Testosterone: Problems With Keeping Them Balanced

How Can You Keep Your Hormones At the Best Levels?

Modern lifestyles contribute to unbalanced, excessive, or deficient levels of estrogen, testosterone, and other sex hormones in men and women. This may result in unpleasant outcomes - such as low sex drive or infertility - as well as to dangerous diseases - including cancer and heart disease. Here's key information you need to make choices to help keep your sex hormones balanced.

You might not be aware that women produce and use testosterone, and men produce and use estrogen. The bodies of both sexes can convert testosterone into estrogen. So all sex hormones are important to you, whether you are male or female.

Balancing Strategy One: Carefully Consider Before Taking Supplementary Hormones

Some people have diagnosed medical conditions which may be treated with supplementary estrogen or testosterone. Before deciding whether to use hormones if you have one of these conditions, be sure you thoroughly understand potential benefits and risks, and weigh these carefully. Consider if there are alternative evidence-based treatments. If you use oral contraceptives, be sure to understand possible side-effects.

Millions of people seek supplementary hormones for vague purposes, such as weight loss, low energy, or a quest to regain lost youthfulness. In this case, the risks are likely to outweigh potential benefits. This is true regardless of whether you use FDA-approved or compounded "bioidentical" hormones.

The National Toxicology Program of the Department of Health and Human Services classifies estrogen as a know human carcinogen, associated with both uterine and breast cancer. Supplementary or excessive estrogen has also been linked to ovarian cancer, prostate cancer, dementia, and stroke.

The dangers of testosterone supplements are not as well understood, with studies finding different outcomes. The Food and Drug Administration (FDA) requires labeling of prescription testosterone products for safety risks affecting the heart and mental health, as well as the potential for abuse. If you take these supplements, benefits, if any, may be small and fleeting. A recent medical journal editorial titled "Testosterone and Male Aging: Faltering Hope for Rejuvenation" states "the sole unequivocal indication for testosterone treatment is as replacement therapy for men with ...organic disorders of the reproductive system."

Click here to learn about two more hormone-balancing strategies

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Estrogen and Testosterone: Problems With Keeping Them Balanced

How Can You Keep Your Hormones At the Best Levels?

Modern lifestyles contribute to unbalanced, excessive, or deficient levels of estrogen, testosterone, and other sex hormones in men and women. This may result in unpleasant outcomes - such as low sex drive or infertility - as well as to dangerous diseases - including cancer and heart disease. Here's key information you need to make choices to help keep your sex hormones balanced.

You might not be aware that women produce and use testosterone, and men produce and use estrogen. The bodies of both sexes can convert testosterone into estrogen. So all sex hormones are important to you, whether you are male or female.

Balancing Strategy One: Carefully Consider Before Taking Supplementary Hormones

Some people have diagnosed medical conditions which may be treated with supplementary estrogen or testosterone. Before deciding whether to use hormones if you have one of these conditions, be sure you thoroughly understand potential benefits and risks, and weigh these carefully. Consider if there are alternative evidence-based treatments. If you use oral contraceptives, be sure to understand possible side-effects.

Millions of people seek supplementary hormones for vague purposes, such as weight loss, low energy, or a quest to regain lost youthfulness. In this case, the risks are likely to outweigh potential benefits. This is true regardless of whether you use FDA-approved or compounded "bioidentical" hormones.

The National Toxicology Program of the Department of Health and Human Services classifies estrogen as a know human carcinogen, associated with both uterine and breast cancer. Supplementary or excessive estrogen has also been linked to ovarian cancer, prostate cancer, dementia, and stroke.

The dangers of testosterone supplements are not as well understood, with studies finding different outcomes. The Food and Drug Administration (FDA) requires labeling of prescription testosterone products for safety risks affecting the heart and mental health, as well as the potential for abuse. If you take these supplements, benefits, if any, may be small and fleeting. A recent medical journal editorial titled "Testosterone and Male Aging: Faltering Hope for Rejuvenation" states "the sole unequivocal indication for testosterone treatment is as replacement therapy for men with ...organic disorders of the reproductive system."

Click here to learn about two more hormone-balancing strategies

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Foods that Affect Testosterone Levels

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A number of studies suggest that exposure to industrial pollutants may affect sexual function, for example, loss of libido, sexual dysfunction, and impotence. This may be due to effects on testosterone levels. In a study of men who ate a lot of contaminated fish, an elevation in PCB levels in the blood was associated with a lower concentration of testosterone levels. These pollutants are found predominantly in fish, but also meat and dairy. The lowest levels are found in plants (see Dietary Pollutants May Affect Testosterone Levels).

Testosterone doesn't just play a role in the determination of secondary sex characteristics like facial hair at puberty. It also regulates normal sexual functioning and the overall physical and psychological well-being of adult men. Abnormally low levels of testosterone can lead to decreased physical endurance and memory capacity, loss of libido, drop in sperm count, loss of bone density, obesity, and depression.

Endocrine-disrupting compounds that build up in fish may be able to mimic or block hormone receptors, or alter rates of synthesis or breakdown of sex steroid hormones. In children, these pollutants may actually impair sexual development. Boys who are exposed may grow up with smaller penises (although only by about two-thirds of an inch shorter at most). Researchers have tried exposing cells from aborted fetal human penises to these kinds of dietary pollutants, and gene expression related to genital development is indeed affected at real-life exposure levels. We're not sure if the effects on penis length are due to the pro-estrogenic effects of the toxins, though, or the anti-testosterone effects.

You've heard of save the whales? Well, male reproductive organs may be at risk from environmental hazards as well.

I previously addressed how we discovered the endocrine disruptor phenomenon in Alkylphenol Endocrine Disruptors and Allergies, as well as where they're found (Dietary Sources of Alkylphenol Endocrine Disruptors).

For more on sustaining male virility, see Male Fertility and Diet, The Role of Diet in Declining Sperm Counts, and Dairy Estrogen and Male Fertility.

I've talked about the role a plastics chemical may play in male sexual functioning (BPA Plastic and Male Sexual Dysfunction). But it's not just toxins, it's the total diet (Survival of the Firmest: Erectile Dysfunction and Death), and not only in men (Cholesterol and Female Sexual Dysfunction). My latest on the topic is Best Foods to Improve Sexual Function.

In health,

Michael Greger, M.D.

PS: If you haven't yet, you can subscribe to my free videos here and watch my live, year-in-review presentations:

Image Credit: Sally Plank / Flickr. Image has been modified.

Original Link

Foods that Affect Testosterone Levels

Foods that Affect Testosterone Levels.jpeg

A number of studies suggest that exposure to industrial pollutants may affect sexual function, for example, loss of libido, sexual dysfunction, and impotence. This may be due to effects on testosterone levels. In a study of men who ate a lot of contaminated fish, an elevation in PCB levels in the blood was associated with a lower concentration of testosterone levels. These pollutants are found predominantly in fish, but also meat and dairy. The lowest levels are found in plants (see Dietary Pollutants May Affect Testosterone Levels).

Testosterone doesn't just play a role in the determination of secondary sex characteristics like facial hair at puberty. It also regulates normal sexual functioning and the overall physical and psychological well-being of adult men. Abnormally low levels of testosterone can lead to decreased physical endurance and memory capacity, loss of libido, drop in sperm count, loss of bone density, obesity, and depression.

Endocrine-disrupting compounds that build up in fish may be able to mimic or block hormone receptors, or alter rates of synthesis or breakdown of sex steroid hormones. In children, these pollutants may actually impair sexual development. Boys who are exposed may grow up with smaller penises (although only by about two-thirds of an inch shorter at most). Researchers have tried exposing cells from aborted fetal human penises to these kinds of dietary pollutants, and gene expression related to genital development is indeed affected at real-life exposure levels. We're not sure if the effects on penis length are due to the pro-estrogenic effects of the toxins, though, or the anti-testosterone effects.

You've heard of save the whales? Well, male reproductive organs may be at risk from environmental hazards as well.

I previously addressed how we discovered the endocrine disruptor phenomenon in Alkylphenol Endocrine Disruptors and Allergies, as well as where they're found (Dietary Sources of Alkylphenol Endocrine Disruptors).

For more on sustaining male virility, see Male Fertility and Diet, The Role of Diet in Declining Sperm Counts, and Dairy Estrogen and Male Fertility.

I've talked about the role a plastics chemical may play in male sexual functioning (BPA Plastic and Male Sexual Dysfunction). But it's not just toxins, it's the total diet (Survival of the Firmest: Erectile Dysfunction and Death), and not only in men (Cholesterol and Female Sexual Dysfunction). My latest on the topic is Best Foods to Improve Sexual Function.

In health,

Michael Greger, M.D.

PS: If you haven't yet, you can subscribe to my free videos here and watch my live, year-in-review presentations:

Image Credit: Sally Plank / Flickr. Image has been modified.

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How Milk May Contribute to Childhood Obesity

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We've known that breastfed infants may be protected against obesity later in life for more than 30 years, but why? It may be the formula. Giving infants formula based on cow's milk presents an unusual situation. Cow's milk is designed to put nearly two pounds a day onto a growing calf, 40 times the growth rate of human infants (see Formula for Childhood Obesity).

The perfect food for humans, finely tuned over millions of years, is human breast milk. Remarkably, among all mammalian species, the protein content of human milk is the lowest. The excessive protein content of cow's milk-based formula is thought to be what may be what sets the child up for obesity later in life.

And then, instead of being weaned, we continue to drink milk. The question thus arises as to whether consumption of a growth-promoting substance from another species throughout childhood fundamentally alters processes of human growth and maturation. A study out of Indiana University, for example, found evidence that greater milk intake is associated with an increased risk of premature puberty; girls drinking a lot of milk started to get their periods earlier. Thus, cross-species milk consumption and ingestion into childhood may trigger unintended consequences.

Only human milk allows appropriate metabolic programming and protects against diseases of civilization in later life, whereas consumption of cow's milk and dairy products during adolescence and adulthood is an evolutionarily novel behavior that may have long-term adverse effects on human health.

Teens exposed to dairy proteins such as casein, skim milk, or whey, experienced a significant increase in BMI and waist circumference compared to a control group. In contrast, not a single study funded by the dairy industry found a result unfavorable to milk.

The head of the Obesity Prevention Center at Boston Children's Hospital and the chair of Harvard's nutrition department wrote an editorial recently to the AMA's Pediatrics journal questioning the role of cow's milk in human nutrition. They stated the obvious: humans have no requirement for other animal's milk; in fact, dairy may play a role in certain cancers due to the high levels of reproductive hormones in the U.S. milk supply.


So what's The Best Baby Formula? Click on the link and find out!

More on dairy and infancy:

And in childhood: Childhood Constipation and Cow's Milk and Treating Infant Colic by Changing Mom's Diet

In adolescence: Saving Lives By Treating Acne With Diet

Before conception: Dairy Estrogen and Male Fertility

During pregnancy: Why Do Vegan Women Have 5x Fewer Twins?

And in adulthood:

In health,

Michael Greger, M.D.

PS: If you haven't yet, you can subscribe to my free videos here and watch my live, year-in-review presentations:

Image Credit: Sergey Novikov © 123RF.com. This image has been modified.

Original Link

How Milk May Contribute to Childhood Obesity

How Milk May Contribute to Childhood Obesity.jpeg

We've known that breastfed infants may be protected against obesity later in life for more than 30 years, but why? It may be the formula. Giving infants formula based on cow's milk presents an unusual situation. Cow's milk is designed to put nearly two pounds a day onto a growing calf, 40 times the growth rate of human infants (see Formula for Childhood Obesity).

The perfect food for humans, finely tuned over millions of years, is human breast milk. Remarkably, among all mammalian species, the protein content of human milk is the lowest. The excessive protein content of cow's milk-based formula is thought to be what may be what sets the child up for obesity later in life.

And then, instead of being weaned, we continue to drink milk. The question thus arises as to whether consumption of a growth-promoting substance from another species throughout childhood fundamentally alters processes of human growth and maturation. A study out of Indiana University, for example, found evidence that greater milk intake is associated with an increased risk of premature puberty; girls drinking a lot of milk started to get their periods earlier. Thus, cross-species milk consumption and ingestion into childhood may trigger unintended consequences.

Only human milk allows appropriate metabolic programming and protects against diseases of civilization in later life, whereas consumption of cow's milk and dairy products during adolescence and adulthood is an evolutionarily novel behavior that may have long-term adverse effects on human health.

Teens exposed to dairy proteins such as casein, skim milk, or whey, experienced a significant increase in BMI and waist circumference compared to a control group. In contrast, not a single study funded by the dairy industry found a result unfavorable to milk.

The head of the Obesity Prevention Center at Boston Children's Hospital and the chair of Harvard's nutrition department wrote an editorial recently to the AMA's Pediatrics journal questioning the role of cow's milk in human nutrition. They stated the obvious: humans have no requirement for other animal's milk; in fact, dairy may play a role in certain cancers due to the high levels of reproductive hormones in the U.S. milk supply.


So what's The Best Baby Formula? Click on the link and find out!

More on dairy and infancy:

And in childhood: Childhood Constipation and Cow's Milk and Treating Infant Colic by Changing Mom's Diet

In adolescence: Saving Lives By Treating Acne With Diet

Before conception: Dairy Estrogen and Male Fertility

During pregnancy: Why Do Vegan Women Have 5x Fewer Twins?

And in adulthood:

In health,

Michael Greger, M.D.

PS: If you haven't yet, you can subscribe to my free videos here and watch my live, year-in-review presentations:

Image Credit: Sergey Novikov © 123RF.com. This image has been modified.

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Six Serious Reasons to Just Ditch Dairy

Haven’t ditched dairy yet?

Here are 6 serious reasons to just do it:

 
ditch dairy1. As per Dr. Michael Klaper, the purpose of cow’s milk is to help a baby calf grow, grow, grow as fast as possible. Dairy is hormonally active…intentionally. But once we are full-sized adults, growth is not a positive thing…it inspires cancer growth and contributes to other health problems.
 
 
2. Upwards of 70% (or more) of the world’s population is lactose-intolerant. The fact that more people than not react with painful gastrointestinal symptoms upon consumption of dairy demonstrates the fact that the human body is not intended to consume it. Doctors and dietitians are now pushing the use of lactase enzymes and other symptom-relieving medications in order to ensure “adequate” intake of dairy products. Yet, if we have to force our bodies to accept something it doesn’t want, shouldn’t that be a sign that something is wrong?
 
3. You do not need dairy for healthy bones. There are excellent plant-sources of calcium that are alkalizing and support bone health. Broccoli, kale, bok choy, other leafy green veggies, sesame seeds, tahini, calcium-set tofu, almonds, aditch dairynd fortified plant milks/juices all have adequate amounts of calcium to meet daily requirements. In fact, calcium in kale is absorbed 30% better than from dairy!  
 
4. People are always concerned about the phytoestrogens in soy foods. Yet, dairy has estradiol, natural animal/human-based estrogen, which is 10,000 times more potent than environmental or phytoestrogens.
 
5. Dairy, particularly cheese, is the number one source of artery-clogging saturated fats in the diet. Remember, according to the American Heart Association, a heart-healthy diet contains no more than 5-6% of total calories from saturated fat, the amount found in a typical vegan diet.
 
ditch dairy6. There is a currently a wall o’ milks that are plant-based and delicious at your neighborhood grocer. Choose between almond milk, soy milk, hemp milk, oat milk, coconut milk, flax milk, rice milk, chocolate almond milk, horchata rice milk, vanilla soy milk, almond-coconut milk, and the hundreds of other varieties now available. Exciting, decadent, creative, and much healthier….dairy milk is indeed jealous! So jealous that Big Dairy recently approached the FDA to intervene and make it illegal for plant milks to be called “milk.” However, consumers are not buying plant-based milk because they’ve been tricked into believing they actually came from a cow. They’re buying plant milk because it’s healthier, cruelty-free, and easier on our planet.
 
Eat plants. Drink plants. For your health.

The post Six Serious Reasons to Just Ditch Dairy appeared first on Plant Based Dietitian.

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Should Pregnant Women Drink Cow’s Milk?

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Foods of animal origin in general naturally contain hormones, but cow's milk may be of particular concern. The hormones naturally found even in organic cow's milk may have played a role in studies that found a relationship between dairy products and human illnesses, such as acne, certain cancers and male reproductive disorders. Milk consumption has also been associated with an increased risk of early puberty and endometrial cancer in postmenopausal women, but "hormonal levels in food could be particularly dangerous in the case of vulnerable populations, such as young children or pregnant women. To this critical population, even a small hormonal intake could lead to major changes in the metabolism."

If you check out my video Why Do Vegan Women Have 5x Fewer Twins, you can see that children are highly sensitive to sex steroids. Because their levels of sex steroids are very low, even a small variation would account for a major change in the total activity of the involved hormone. Because no lower threshold for estrogenic action has been established, caution should be taken to avoid unnecessary exposure of fetuses and children to exogenous sex steroids, even at very low levels.

In the AMA's Pediatrics Journal, the Chair of Boston Children's Hospital's Obesity Prevention Center along with the chair of Harvard's nutrition department questioned dairy industry recommendations that children should drink three glasses of milk a day. Dairy milk evolved to promote the growth of grazing animals at high risk for predation when small, so they needed to put on a few hundred pounds quickly in the first few months of life.

The consequences of lifetime human exposure to the growth factors in milk have not been well studied. "Milk consumption increases serum concentrations of insulin-like growth factor 1, which is linked to prostate and other cancers. In addition, modern industrial methods maintain dairy cows in active milk production throughout their pregnancies, resulting in a milk supply with high levels of reproductive hormones."

Pregnant cows excrete significantly higher levels of sex steroids into their milk than non-pregnant cows. The subsequent consumption of such dairy products from pregnancy results in additional consumer exposure. And it's not just dairy. Although dairy products are an important source of hormones, other products of animal origin must be considered as well. All edible tissues of animal origin contain estrogen. This may explain why, in a study of over a thousand women eating plant-based diets, vegan women have a twinning rate that is one fifth that of vegetarians and omnivores.

Twin pregnancies are risky pregnancies, with much higher complication rates. Many parents and physicians underestimate the negative consequences of multiple pregnancy, but "women with a multiple pregnancy face greater risks for themselves and their infants." Twin babies may be ten times more likely to die at birth. To avoid these complications, the research team writes, "women attempting conception should avoid milk and dairy products."

Minimizing dairy, our nation's #1 source of saturated fat may be a good idea for dads too: Dairy Estrogen and Male Fertility.

What about the endocrine-disrupting xenoestrogens--how do they compare with the natural hormones in our food supply? That was the topic of my video Estrogen in Meat, Dairy, and Eggs.

Then once they're born, best to stick to human milk:

Then as young children, dairy can sometimes cause another problem: Childhood Constipation and Cow's Milk

Here's a selection of other pregnancy-related videos:

In health,
Michael Greger, M.D.

PS: If you haven't yet, you can subscribe to my free videos here and watch my live, year-in-review presentations--2013: Uprooting the Leading Causes of Death, More Than an Apple a Day, 2014: From Table to Able: Combating Disabling Diseases with Food, 2015: Food as Medicine: Preventing and Treating the Most Dreaded Diseases with Diet, and my latest, 2016: How Not To Die: The Role of Diet in Preventing, Arresting, and Reversing Our Top 15 Killers.

Image Credit: LivingLandscapeArchitecture / Flickr

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Estrogen in Meat, Dairy, and Eggs

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Estrogen hormones can be thousands of times more estrogenic than typical endocrine-disrupting chemicals. Dietary exposure to natural sex steroids (in meat, dairy, and eggs) is "therefore highly relevant in the discussion of the impact of estrogens on human development and health." And chicken estrogen is identical to human estrogen--they're identical molecules. So it doesn't matter if it ends up in our drinking supply from women taking birth control pills excreting it in their urine, or cows excreting it into their milk. The source doesn't matter; the quantity does.

If you check out my video Estrogen in Meat, Dairy, and Eggs, you can see that a child's exposure to estrogens in drinking water is about 150 times lower than exposure from cow's milk, so our day-to-day estrogen exposure levels are more likely determined by whether or not we happen to eat dairy products that day.

Human urine is "often cited as the main source of natural and synthetic estrogens in the aquatic environment," but the level of estrogen even in the urine of heavy meat-eaters, who have significantly higher levels, pales in comparison to the estrogen excreted by the farm animals themselves. Pig, sheep, cattle, and chickens produce literally tons of estrogen every year.

Women may excrete 16 mg every day, but farm animals may release ten times more, or in the case of pregnant cows, thousands of times more. Animal waste may contribute an estimated 90% of total estrogens in the environment. Five gallons of runoff water contaminated with chicken manure may contain a birth control pill's worth of estrogen.

Estrogen levels in poultry litter are so high that when farmers feed chicken manure to their animals to save on feed costs, it may trigger premature development. Poultry manure has among the highest hormone content, quadruple the total estrogens, and nine times more 17-beta estradiol, the most potent estrogen and a "complete" carcinogen, as it exerts both tumor initiating and tumor promoting effects.

From a human health standpoint, do we really care about feminized fish, or the appearance of "intersex roaches"? The problem is that the hormones get into the food supply. Endogenous steroid hormones in food of animal origin are unavoidable as they occur naturally in these products. It's not a matter of injected hormones, which are banned in places like Europe in order to protect consumers' health. Sex steroid hormones are part of animal metabolism, and so all foodstuffs of animal origin contain these hormones, which have been connected with several human health problems. (See Why Do Vegan Women Have 5x Fewer Twins?)

What effects might these female hormones have on men? See Dairy Estrogen and Male Fertility.

The implications of this relatively new practice of milking cows even when they're pregnant is further explored in:

More on xenoestrogens in:

In health,
Michael Greger, M.D.

PS: If you haven't yet, you can subscribe to my free videos here and watch my live, year-in-review presentations--2013: Uprooting the Leading Causes of Death, More Than an Apple a Day, 2014: From Table to Able: Combating Disabling Diseases with Food, 2015: Food as Medicine: Preventing and Treating the Most Dreaded Diseases with Diet, and my latest, 2016: How Not To Die: The Role of Diet in Preventing, Arresting, and Reversing Our Top 15 Killers.

Image Credit: BruceBlaus

Image Credit: [Nakhorn Yuangkratoke] © 123RF.com

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Is Monsanto’s Roundup Pesticide Glyphosate Safe?

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GMO soy has been found to be contaminated with pesticide residues (see Are GMOs Safe? The Case of Roundup Ready Soy), but are these levels anything to worry about? I explore this question in my video Is Monsanto's Roundup Pesticide Glyphosate Safe?.

Researchers out of Norway described the amount of pesticide residues found in GMO soy as high compared to the maximum allowable residue levels. The legal limit for glyphosate in foods had been set at 0.1-0.2 mg/kg; so these exceed the legal limits by an average of about 2000%, whereas organic and conventional non-GMO soy both had none.

So what did Monsanto do? Did the industry ditch the whole GMO thing, go back to using less pesticides so that residue levels wouldn't be so high? Or, they could just change the definition of high. What if they could get authorities to raise the maximum residue level from 0.1 or 0.2 up to 20? Then the residue levels won't look so high anymore. And this is exactly what they did. The acceptance level of glyphosate in food and animal feed has been increased by authorities in countries that use Roundup-Ready GM crops. In Brazil, they went up to ten, and the U.S. and Europe now accept up to 20. In all of these cases, the maximum residue level values appear to have been adjusted, not based on new evidence indicating glyphosate toxicity was less than previously understood, but pragmatically in response to actual observed increases in the content of residues in GMO soybeans--otherwise it wouldn't be legal to sell the stuff.

What evidence do we have, though, that these kinds of residues are harmful? For 12 years we've heard that Roundup interferes with embryonic development, but that study was about sea urchin embryos. For 14 years we heard that Roundup may disrupt hormones, but that's in mouse testicles.

Blogs will dish about concerning new studies implicating Roundup in male fertility, but if we look at the study, it's about rat testicles. Some blogs cite studies with disturbing titles like "prepubertal exposure alters testosterone levels and testicular shape," but they're talking about puberty in rats, though that doesn't make as catchy a blog title.

Why not use human tissue? Women are having babies every day--why not just experiment on human placentas, which would otherwise just get thrown away? In 2005, researchers did just that. And despite all the negative effects in rodents, glyphosate, the active ingredient in Roundup didn't seem to have much of a toxic effect on human cells even at high doses, or have much effect on a hormone regulating enzyme, leading Monsanto-funded reviewers to conclude that regardless of what hazards might be alleged based on animal studies, "glyphosate is not anticipated to produce adverse developmental and reproductive effects in humans."

But pure glyphosate isn't sprayed on crops, Roundup is, which contains a variety of adjuvants and surfactants meant to help the glyphosate penetrate into tissues. And indeed when the study was repeated with what's actually sprayed on GMO crops, there were toxic and hormonal effects even at doses smaller than the 1 or 2% concentration that's used out on the fields.

Similar results were found for other major pesticides. It took until 2014, but eight out of nine pesticide formulations tested were up to one thousand times more toxic than their so-called active ingredients, so when we just test the isolated chemicals, we may not get the whole story. Roundup was found to be 100 times more toxic than glyphosate itself. Moreover, Roundup turned out to be among the most toxic pesticides they tested. It's commonly believed that Roundup is among the safest, though, an idea spread by Monsanto, the manufacturer. However, this inconsistency between scientific fact and industrial claim may be attributed to the huge economic interests involved.

What is glyphosate? Check out: Are GMOs Safe? The Case of BT Corn.

It's the dose that makes the poison, though. Do we have evidence that the levels of Roundup chemicals not only found on crops, but also in our bodies after eating those crops actually have adverse effects? That's the subject of the video: GMO Soy and Breast Cancer.

Commercial interests can have a corrupting effect on the science of nutrition and hold sway over institutions that are supposed to operate in the public interest. See for example:

In health,
Michael Greger, M.D.

PS: If you haven't yet, you can subscribe to my free videos here and watch my live year-in-review presentations Uprooting the Leading Causes of Death, More Than an Apple a Day, From Table to Able, and Food as Medicine

Image Credit: Mike Mozart / Flickr

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