Infertility? You could blame it on your mother – but there really was no way for her to have known.

According to the American Pregnancy Association, there are three main causes of infertility in males: a hypothalamic or pituitary disorder (1-2%), gonad disorder (30-40%), and sperm transport disorder (10-20%). That leaves 40-50% of cases with unknown causes.

None of these, however, is a root cause of infertility. They are names of categories of disorders that define infertility. Infertility may be traced back to a hypothalamic or pituitary disorder, for example, but the question remains –what caused those disorders to begin with?

Science combined with simple logic focused on problem solving says that hypothalamic, pituitary, gonad and sperm transport disorders are caused by damage done to the vulnerable, developing brains of fetuses and infants by brain-damaging chemicals, delivered by pregnant and lactating women.

1) Brain damage, followed by reproductive disorders, can be produced in human fetuses and newborns whose brains are not fully developed.

2) Excitotoxic amino acids (glutamic acid and aspartic acid) will cause brain damage when delivered in quantity to developing, vulnerable brains.

3) Brain-damaging amino acids consumed by pregnant and lactating women will be passed to their fetus through the placenta and to infants through mother’s milk.

4) Excitotoxic amino acids are readily available in processed and ultra-processed foods, protein powders and protein drinks, protein substitutes, flavor enhancers, pharmaceuticals, dietary supplements, cosmetics, and vaccine excipients.

Here’s how it works

A study demonstrating glutamate-induced brain damage was published in Science by John Olney, M.D. way back in 1969, titled “Brain lesions, obesity, and other disturbances in mice treated with monosodium glutamate.” Olney established that:

1) Brain damage, followed by reproductive disorders, can be produced in newborn mice, whose brains are not fully developed. A student in Olney’s lab had observed that mice being used in studies of glutamate-induced retinal dysfunction had become grotesquely obese. A series of studies by Olney and others followed. Many of them were studies of MSG fed to animals.

2) Excitotoxic amino acids (glutamic acid and aspartic acid) will cause brain damage when delivered in quantity to the vulnerable brains of neonatal mice.

When present in amounts needed for normal body function, glutamic acid is essential. But when accumulated in amounts greater than that needed for normal body function, the neurotransmitter glutamic acid becomes an excitotoxic neurotransmitter, firing repeatedly, damaging the cells that host targeted glutamate-receptors and/or causing death by over-exciting those glutamate receptors until their host cells die.

3) Excitotoxic amino acids can be delivered to neonatal mice through feeding.

In the laboratory, researchers manipulated dosage of glutamic acid and aspartic acid until they found those that were lethal to brain cells.

Additional confirmation of the brain-damaging effects of excitotoxic free glutamic acid comes from research focused on identifying and understanding human diseases and abnormalities associated with glutamate, often for the purpose of finding drugs that would mitigate glutamate’s adverse effects. By 1980, glutamate-associated disorders such as headaches, asthma, diabetes, muscle pain, atrial fibrillation, ischemia, trauma, seizures, stroke, Alzheimer’s disease, amyotrophic lateral sclerosis (ALS), Huntington’s disease, Parkinson’s disease, depression, multiple sclerosis, schizophrenia, obsessive-compulsive disorder (OCD), epilepsy, addiction, attention-deficit/hyperactivity disorder (ADHD), frontotemporal dementia and autism were on the rise, and evidence of the brain-damaging effects of glutamate were generally accepted by the scientific community.

Having provided evidence that brain lesions can be induced in fetuses and neonates thru the introduction of excitotoxins, and having pointed out that glutamic acid is an excitotoxin, the only question that remains is how excitotoxic glutamic acid could get to the vulnerable brain of the infant or the fetus causing brain damage, destroying those areas of the arcuate nucleus that would regulate reproductive function had they not been obliterated.

To be excitotoxic, glutamic acid has to be accumulated in considerable quantity. There have always been excitotoxins, although not in food in excessive amounts. But that changed in 1957 when there was a transformation in the method of producing the glutamate used in MSG from extraction of glutamate from a protein source, which had been a slow and costly method, to using carefully selected genetically modified bacteria to excrete glutamate through their cell walls. That allowed virtually unlimited production of manufactured free glutamate and MSG.

It wasn’t long before food manufacturers found that profits could be increased by using manufactured free glutamate to produce their own flavor-enhancing additives, and dozens of excitotoxic ingredients were added to the food supply. Over the next two decades, the marketplace became flooded with manufactured/processed free glutamate in ingredients such as hydrolyzed proteins, yeast extracts, maltodextrin, soy protein isolate and MSG — and the large amounts of manufactured free glutamate needed to cause excitotoxicity became readily available to anyone consuming a number of processed food products during the course of a day.

Today, there is more than sufficient excitotoxic glutamic acid in food, “fake” food and dietary supplements to cause excitotoxicity.

Once it is understood that excitotoxins are readily available, transport to fetus and newborn becomes easy to understand. Nourishment (and not so nourishing material) is delivered to the fetus in the form of material ingested by a pregnant woman and passed to the fetus through the placenta.

Data confirm that free glutamate can be passed in excessive quantities to neonates and fetuses by expectant mothers who ingest excessive amounts. Glutamate can cross the placenta during pregnancy, can cross the blood brain barrier (BBB) in an unregulated manner during development and can pass through the five circumventricular organs (unique areas of the brain that lie outside the BBB) which are leaky at best at any stage of life. Moreover, the BBB is easily damaged by fever, stroke, trauma to the head, seizures, ingestion of MSG, and the normal process of aging. Similar to drugs and alcohol, free glutamate can also be passed to infants through mothers’ milk.

But a crisis? All of a sudden?

There has always been infertility, but not in such numbers that it could be called a crisis. There have always been amino acids that could become excitotoxic, but not to the extent that they could accumulate and become excitotoxic. The infertility crisis began after amino acids with excitotoxic potential became available in the quantity necessary to cause them to become excitotoxic – made possible by the 1957 introduction of monosodium glutamate produced by bacterial fermentation.

Science combined with a good dose of logic tell us that glutamic acid passed to fetus and neonate by pregnant and lactating women is the root cause of the infertility crisis.

If you have questions or comments, we’d love to hear from you. If you have hints for others on how to avoid exposure to MfG, send them along, too, and we’ll put them up on Facebook. Or you can reach us at and follow us on Twitter @truthlabeling.


American Pregnancy Association

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