Some women are unfortunate enough to have Polycystic Ovarian Syndrome or PCOS despite not showing any signs or symptoms typical to this health problem. When symptoms like being overweight, diabetes or extra androgens are an issue in women’s health, we have to ask the question: What exactly causes PCOS?
PCOS will not be fully resolved unless the underlying problem is unraveled.
But what might that be?
The most common infertility disorder in the endocrine system among women of child-bearing age is known as polycystic ovarian syndrome or PCOS. This hormonal disorder interferes with the process of ovulation or more specifically, with the growth and release of eggs from the ovaries.
The eggs naturally grow in structures called follicles in the ovaries. Those are tiny sacs filled up with a fluid containing biologically-specific content. When the egg matures, the follicle cracks open to release the egg from the ovary making it available to be fertilized. This process is called ovulation.
In order for the ovulation process to run smoothly, specific hormones are necessary for normal amounts.
But women with PCOS have higher levels of the so called “male” hormone – androgen. That is what stops the follicles from breaking open and releasing the eggs and leads to irregular or absent periods. The filled up follicles end up in the ovaries as cysts. That makes it increasingly difficult and more challenging to conceive, but not impossible.
Early diagnosis and adequate treatment can be helpful in controlling the symptoms and preventing long-term problems.
A healthy MTHFR enzyme is crucial for our well-being. However, in some people with an MTHFR gene mutation, the enzyme does not produce sufficient methyl folate which has a negative effect on hormones.
When functioning correctly, the MTHFR enzyme is involved in many different crucial processes in the body such as detoxification, producing energy, repairing and building DNA and RNA, building immune cells, repairing cell membranes, processing hormones and many others. In other words, its job is to make sure that everything in the organism is going “according to the plan”.
Properly functioning ovaries require an efficient folate pathway.
Any reduction of the folate/homocysteine pathway efficiency could increase the risk of PCOS. The homocysteine-methionine cycle runs in conjugation with the folate cycle, and therefore any changes in either of the metabolic cycles may disturb the balance between them.
When you have polycystic ovary syndrome (PCOS), you must be aware that this disorder is not only within your ovaries and can have many metabolic influences on weight, blood sugar disturbance, excess male hormones etc. This is a complex systemic disorder that requires a comprehensive approach.
One of the main problems is that women with PCOS have predispositions for higher homocysteine levels than other healthier women. In general, the most common cause of elevated homocysteine levels (hyperhomocysteinemia) is reduced activity of MTHFR, which causes low folate. There may also be low B12, low B6 and/or low zinc which is a cofactor for the conversion and regeneration of homocysteine back to methionine.
Elevated homocysteine level may be the result of a genetic predisposition, despite the dietary deficiency of folate.
The most commonly known inherited risk factor for elevated homocysteine levels are the genetic mutations in the MTHFR gene. The mutation appearance impairs the ability of our body to process folate.
We all have 2 MTHFR genes, one inherited from each parent. Usually, mutations must be present in both copies of a person’s MTHFR genes (or to be “homozygous” for the mutation) for any damaging effect. If the mutation is present in just one of the MTHFR genes, it is “heterozygous” for the MTHFR mutation.
One of the most common mutations in the MTHFR gene is the C677T variant. The homozygous variants may down regulate folate by as much as 60-70%. With this lack of folate, the person is more susceptible to having reduced methyl groups which will affect all the things we discussed above, like hormones, sleep, mood, detoxification and much more.
Some research suggests that as much as 60% of the population may have a variation in the gene. This certainly doesn’t mean that everyone with the variation will have an issue, however, it is important to investigate if you have hormonal issues like PCOS, endometriosis, fibrocystic breast, fibrocystic ovaries or fibroids.
Increased homocysteine, aside from the MTHFR genetic variation, may make people more susceptible to other conditions like cardiovascular disease, increased risk of coronary artery disease (CAD) and blood clots in the arteries and veins. Abnormal clotting may also mean that women who are pregnant may be more susceptible to miscarriage.
PCOS is associated with overweight, diabetes, excess androgen hormones. Studies show that many women with PCOS have the MTHFR gene variation. Many studies worldwide are trying to find the link between these conditions. Researchers are interested in the association between the MTHFR C677T polymorphism with PCOS. The research suggests that these two may be related to thrombophilia and heart disease.
The message should be that those women who have been diagnosed with PCOS or have had miscarriages, should check to see if they have the MTHFR gene.
Endocrine Disruptors (ED) are a group of synthetic, man-made chemicals that have permeated many/most aspects of our modern lives.
Known to have negative effects on the reproductive system, endocrine disruptors have the capacity to damage or kill cells, influence genetic expression and alter the production or balance of estrogen and androgens in the female and male bodies. Hence, ED’s have been labeled with carcinogenic, mutagenic and reprotoxic capabilities.
Those with the MTHFR gene are particularly vulnerable to the negative effects of ED exposure, as one of the primary organs affected by the mutation is the liver, with levels of our primary antioxidant, glutathione, then depleted/ reduced. For anyone with a positive MTHFR mutation, it is paramount to support liver function, phase II detoxification pathways especially. As products containing ED’s only serve to place a further burden upon the liver, it is especially pertinent to avoid these products and remove them from the home.
As defined by the National Institute of Environmental Health Sciences, endocrine disruptors can:
As fertility and pregnancy require the delicate balance and interplay of both female and male hormones to be working optimally, it is no surprise that any chemical or substance that impacts the body’s hormonal balance will then negatively impact fertility also.
The NIH also states that research does show endocrine disruptors may pose the greatest risk during prenatal and early postnatal development when the fetuses organs and nervous system is developing.
As aptly summarized by the WHO:
- Together, the animal model data and human evidence support the idea that exposure to EDCs during fetal development and puberty plays a role in the increased incidences of reproductive diseases, endocrine-related cancers, behavioural and learning problems, including ADHD, infections, asthma, and perhaps obesity and diabetes in humans.
- In adults, EDC exposures have recently been linked with obesity, cardiovascular disease, diabetes and metabolic syndrome.
- In certain parts of the world, there has been a significant decrease in human fertility rates, which occurred during one generation. There is also a notable rise in the use of assisted reproductive services.
- An increasing number of chemicals to which all humans in industrialized areas are exposed have been shown to interfere with hormone synthesis, action or metabolism.
Below is a list of common endocrine disruptors. It is advised to remove these completely from your home wherever possible and move toward natural and organic alternatives.
1/ Eat fresh foods instead of processed, and buy food items loose/bulk over packaged. This will vastly reduce the level of phthalates and BPA the body is exposed to via food packaging.
2/ Buy foods and beverages packaged in glass wherever possible.
3/ Eat organic wherever possible, reducing your exposure to endocrine disruptors in pesticides. Refer to the Environmental Working Group’s list of the Dirty Dozen (best bought organic) and Clean Fifteen (OK to consume in conventional form).
4/ Filter all water that will be cooked with or drunk in the household to remove any pesticides, herbicides or hormonal/pharmaceutical residues present in the water supply. A good quality water filter will also remove chlorine, fluoride, microbes, and impurities.
5/ Avoid all products that use synthetic fragrances e.g.all fragranced personal care products such as perfumes, moisturizers & body washes, air fresheners, room sprays, car air fresheners, deodorizers and household cleaning products.
6/ Avoid using dryer sheets and fabric softener.
7/ Use a low chemical, eco-friendly dry cleaner over commercial.
8/ If you are exposed to a high level of fire retardants and formaldehyde’s in the home or car (e.g. if they are new or renovated), consider a vacuum cleaner with a HEPA filter, avoid reupholstering old furniture and allow time for the house to ‘settle’ if replacing flooring before re-entering. Keep doors & windows open as much as possible to allow these chemicals to leave the house as soon as possible.
9/ Replace all nonstick cookware with eco-friendly options. Never use plastic containers to store hot foods, or food at all if possible. BPA and
10/ Never use plastic containers to store hot foods, or food at all if possible. BPA and phthalates easily leach into food when exposed to heat, making heating foods in the microwave in plastic highly unsafe.
11/ Convert storage containers over to glass or stainless steel. These containers with plastic lids for ease of transport are still ok.
12/ Avoid the use of plastic wrap and baking paper where possible.
13/ Eliminate all synthetic and chemical based skin care, personal care and makeup from the household. Convert all products over to natural and organic alternatives. With between 60% – 90% of what is put on the skin absorbed into the body, if you wouldn’t drink your liquid foundation, would you put it on your skin?Convert all
14/ Convert all household cleaning products over to natural based.
15/ Convert all drink bottles over to stainless steel or glass versions. ‘BPA free’ bottles and containers still contain xeno-oestrogens and endocrine disruptors and will begin leaching into the water as they age.
16/ Avoid toys high in plastic around the home, choosing more eco-friendly and sustainable materials, such as wood. Read more on BPA effects on fertility.
In my current series of preconception webinars, I am not surprised by the number of women joining me who have had multiple miscarriages or who are currently having IVF (often unsuccessfully). They didn’t know they had the MTHFR gene and even after multiple pregnancy losses, still were not checked for the gene. Eventually, they sought the answer themselves.
Folate is critical for DNA methylation and cell division. As a result, it’s also important for the proper development of ova, or egg cells, that can successfully implant in the uterus.
But when we say folate what do we mean?
Well, think of ‘folate’ as an umbrella term. Under that umbrella, there is folic acid (the synthetic man made form), folinic acid which is an important cofactor for healthy DNA creation, and our active folate, called5-MTHF (methyltetrahydrofolate).
In IVF and fertility issues, doctors and specialists alike are still recommending a high dose 5mg folic acid supplement to remedy a MTHFR mutation.
We also have mandatory folic acid supplementation in all our commercial bread and in many of our breakfast cereals, juices, protein bars, shakes, and energy drinks. So researchers are now looking into what these high doses are doing to us.
You all know that those with the MTHFR gene mutation are counseled into avoiding folic acid. The reason is that folic acid has the potential to build up and inhibit our DHFR enzyme, which is crucial in our folate pathway. Some research has also shown that unmetabolized folic acid builds up and affects our immune system negatively too.
But now we know more! Some really interesting studies on folic acid were released in the latter half of 2015 that specifically focused on folic acid. These studies looked at the 5mg dose of folic acid to see how it affected fertility. Now, this is interesting to me, because many of our patients in the clinic have been prescribed 5mg of folic acid in response to their doctor seeing a MTHFR C677T homozygous result, or to prepare their body before they start IVF cycles.
So let’s take a closer look:
We know that fertility is decreasing world wide and we have to ask ourselves why. Sure we have a more toxic environment than ever before; yes we are more stressed than previous generations and have worse diets and fewer nutrients in our soil. But a recent study completed in the Human Molecular Genetic Journal at the end of 2015 showed some interesting information. They looked at DNA methylation of the sperm when they gave folic acid. The researchers trialed 5mg of folic acid in infertile men and acknowledged that serum folate concentrations increased significantly after 6 months of folic acid supplementation. They also noticed a slight, but non-significant increase in sperm numbers, but the surprising thing is that they found a ‘significant loss of methylation across the sperm epigenome’, and more so if you were homozygous for the MTHFR C677T mutation.
What is more alarming is that the researchers suggested that this loss of methylation in sperm DNA might be transmitted to the offspring. So what they are saying is that folic acid at high doses not only decreases the fertility of men by negatively affecting their DNA, but also that these effects may be passed onto the child.
Is this significant? Could this be adding to the infertility effect we are seeing in men?
In the Clinical Journal of Nutrition in 2015, Karen Christensen found that high folic acid consumption reduces MTHFR protein and activity levels, creating a pseudo MTHFR deficiency in mice.This deficiency affects liver cells ability to metabolize fat and affects cell membrane integrity. That’s why we often see elevated cholesterol levels in people with MTHFR deficiency and issues with egg integrity in women undergoing IVF.
Another study looking at folic acid supplementation in people with the MTHFR gene going into IVF also revealed some interesting data. This Swedish study found that the higher the folic acid intake, the higher the plasma folate. Overall, the conclusion was that ‘high folic acid intake did not seem to assist infertile women to achieve pregnancy after fertility treatment’.
It’s the same result as above for the men.
So we seem to be getting more of the same. Yes, folic acid is going to increase serum folate levels, that much makes sense. However, it does not help DNA methylation, that’s why it’s not helping fertility.
Methylation of DNA is what controls our fertility. Just because we’ve always done something doesn’t make it right. There should be a worldwide review of folic acid supplementation in fertility treatment. There is enough research emerging to have a review of existing protocols.
Find out more about the study.
Founder MTHFR Support Australia
BPA or Bisphenol A is a common chemical found in plastics and has been in large scale industrial use since the 1960’s.
This chemical is found primarily in two substances – polycarbonate plastics and epoxy resins, with consumers then exposed to BPA via using plastic storage containers, drinking from plastic water bottles, eating foods wrapped or stored in plastics, receiving dental sealant to prevent tooth decay, eating canned goods (BPA coats the inside of cans) and also via bottle tops, water supply lines and paper receipts.
BPA poses a threat to our health as it a synthetic xeno-oestrogen, a compound that mimics or imitates oestrogen in the body. As we are widely exposed to this chemical in our modern day diets, lifestyles and environments, BPA has shown the power to enter the body and disrupt the hormonal balance in both males and females.
This has huge implications for fertility, with in utero exposure to Bisphenol A (or similar compounds) linked with developmental, behavioral and reproductive abnormalities in the fetus, infant, and children.
A recent analysis of data found BPA to affect the brain development and sexual differentiation and behaviour of offspring exposed to BPA at environmentally relevant doses. Genes encoding oestrogen receptors were altered, as were parts of the cortex (in males) and hypothalamus (in females) in the brain.
Overall, the research suggested BPA was having an effect on the health of offspring and children exposed to BPA, leading to changes in social behaviour, and a reduction in sexual dimorphism, or, obvious differences in appearance between males and females.
While BPA affects both men and women, due to its oestrogenic effect, the impact of prolonged exposure can carry an increased risk for men. Higher BPA levels have demonstrated a 20% reduction in fertility in men and a negative impact on the prostate of male infants.
It is also important to note that purchasing and using ‘BPA Free’ products does not shield consumers from the negative effects of this xeno-oestrogen, with BPS, the compound used to commonly replace Bisphenol A in ‘BPA Free’ products, having a similar effect on the body.
Bisphenol A: most common bisphenol. Also known as:
2,2′-bis(4-(2,3-epoxypropoxy)phenyl)propane = 2,2′-[(1- 3 2 methylethylidene)bis(4,1-phenyleneoxymethylene)]bisoxirane
2,2-Bis(4-hydroxyphenyl)propan = 4,4′-isopropylidenediphenol
Bisphenol S: compound commonly used to simply replace Bisphenol A in ‘BPA-free’ products.Also disrupts the endocrine system. It’s chemical/ alternative name:
4,4′-sulfonylbisphenol,bis(4-hydroxyphenyl)sulfone
Bisphenol B, C, E, F, G, M, P, PH: other oestrogen mimicking chemicals in plastics and resins.
TMC and Z: other oestrogen mimicking chemicals in plastics and resins
It is important to remember that those with the MTHFR gene are particularly vulnerable to the negative effects of Bisphenol A exposure, as one of the primary organs affected by the mutation is the liver, with levels of our primary antioxidant, glutathione, then depleted/ reduced. For anyone with a positive MTHFR mutation, it is paramount to support liver function, phase II detoxification pathways especially. As products containing BPA/plastics only serve to place
As products containing BPA/plastics only serve to place a further burden upon the liver, it is especially pertinent to avoid these products and remove them from the home. MTHFR Support Australia recommends removing all/ as many BPA-containing items from your home, and begin making swaps to healthier options that will ensure the health of your genes, methylation and that of your future children to come!
Roundup is a popular brand of herbicide by Monsanto and has been making rounds not because of how great a product it is but because of its active ingredient: Glyphosate, a compound declared carcinogenic by the International Agency for Research on Cancer or IARC.
It’s household popularity is not just what makes it dangerous. It made headlines when people found out Roundup was being used on GMOs (Genetically Modified crops). Research has also linked it to antibiotic resistance and hormone disruption. Because of this, many governments are considering banning or at least restricting the use of the substance particularly in public places such as school districts.
Monsanto introduced Glyphosate in the US in 1974 and was originally used to kill weeds by blocking proteins essential to plant growth. It’s now a common herbicide in more than 160 countries with a reported use of at least 1.4 billion lbs. (635 million kg) annually. While this is mostly sold for home use, it’s mostly applied by the agricultural sector on corn, soy, and cotton crops, especially in the US.
Its use skyrocketed after seeds were genetically engineered to tolerate the chemical. Because these seeds produce plants that are not killed by glyphosate, farmers can apply the weed killer to entire fields without worrying about destroying crops.
Glyphosate has been linked to the following diseases/conditions:
The EPA is reviewing its approved uses of glyphosate while countries such as Sri Lanka has banned it. Brazil is considering a similar move. Mexico and the Netherlands have imposed new restrictions, and Canada has just begun a process to consider new rules.
As for Australia, it may take a while for our government to follow suit .
One of the most common things I hear is the utter confusion many people find themselves in after they:
With the wealth of scientific (and at times confusing and complex) information found online surrounding MTHFR, it is no wonder many end up going around in circles and getting confused!
This is can be especially amplified in the case of those searching for clear and reliable information when it comes to the MTHFR gene mutation effects on fertility/preconception and pregnancy, as they are both very important topics where the health of both mother and child can rely on thoroughly understanding this vital information!
This article aims to plainly spell out what MTHFR actually is in the scope of preconception and pregnancy, both highlighting its general role in the body, and a vital role both before and during pregnancy.
MTHFR stands for methylene-tetrahydrofolate reductase.
It is an enzyme in your body that converts the folate you eat (like in leafy greens and legumes) into the active form called 5-MTHF, or, 5-Methyltetrahydrofolate.
This means, that if you have a mutation in your MTHFR gene, the ability for your body to create healthy levels of active folate will be affected or decreased. This will result in less active folate available for your body to use in several very important processes.
This is where the link between MTHFR gene mutation, preconception and pregnancy arises. Several of the vital processes that we need active folate for are highly active during times of preconception and pregnancy and need to be working well to support a healthy pregnancy.
During preconception and pregnancy, you need good levels of active folate for:
As you can see, addressing and supporting your MTHFR genes during your preconception phase is the best way to healthily support both your body once you fall pregnant, and the growth and development of your new baby.
Knowing your MTHFR gene result and supporting your folate levels where needed is a key step in preconception, and both should not be undervalued!
Carolyn Ledowsky,
Founder of MTHFR Fertility
PS: If you are looking for a more in-depth explanation and management of MTHFR before pregnancy, be sure to check out our Flagship course “MTHFR and Preconception“. This 4 to 8 module course will guide you through the ins and outs of preparation your body will need to have a healthy and thriving pregnancy. Modules include what tests to expect, how to analyze the results and steps to take to prepare mentally, physically and emotionally for your pregnancy.”
Recently, infertility was brought into the spotlight throughout the medical community. Specifically, they were highlighting a century’s old procedure and the success rate experienced by couples trying to conceive around the world: flushing the fallopian tubes.
This is an old procedure that is over 100 years old. The technical name for this procedure is “Hysterosalpingography (HSG). The procedure involves flushing the fallopian tubes with iodized poppy seed oil and then undergoing an X-ray to get images of the uterus and fallopian tubes.
Sometimes the medical community gets lucky and stumbles upon new scientific discoveries, HSG is a great example of this. It was originally intended to be an imaging technique, but it turns out HSG might be making women more fertile!
In a study done in Canada, 1,119 infertile women underwent HSG treatment and 40% of the women who received HSG treatment with poppyseed oil fell pregnant within 6 months compared to 29% of women who received an HSG with water. That is a big difference in pregnancy rates between HSG poppyseed oil and HSG water treatment groups. The poppyseed oil group experienced a conception rate that was 11% higher than the water HSG treatment group.
Many of our patients at MTHFR Support and Fertility are using this procedure in combination with our preconception program with great success. You can read more about this procedure and the research at Medical News Today.
If you’re reading this, you probably already have some sense of what phenols are, and what they do. But if you have no idea what phenols are, here is a quick overview of Polyphenols and Phenols and Prenatal Exposure
Phenols are a large class of chemical compounds. They play a role in regulating cell growth and adipogenesis (The process of cells specializing to become fat cells), by interacting with nuclear receptor sites (the location where hormones collaborate with cells).
The hydroxyl group on phenols is what makes them have unique properties. They can bond tightly with oxygen and have a reactive oxygen-hydrogen bond at the same time. These chemical characteristics give rise to some potentially beneficial effects (from NATURALLY occurring phenols) within the body such as:
There are two types of phenols you can find: natural and synthetic. The benefits come from naturally occurring phenols, which are absorbed into the body through the food you eat. Healthy, naturally occurring phenols come from fruits and vegetables, primarily in the form of flavonoids (a polyphenol). It is important to understand the difference between Polyphenols and Phenols and Prenatal Exposure. Polyphenols are the most beneficial phenols to consume. You can find high polyphenol concentrations in the following foods listed here.
Naturally occurring phenols and polyphenols are powerful compounds that are beneficial to the body but are not fully understood by science. You will never get too many polyphenols from over eating fruits and vegetables, so don’t worry about these phenols; worry about synthetic phenols!
Synthetic phenols may pose some health risks during pregnancy and to overall health. They have the ability to act as endocrine (hormonal) disruptors by interacting with the following hormone receptors [2]:
Glucocorticoid receptors
Thyroid receptors
Estrogen receptors
Synthetic phenols may pose a risk to pregnancy. The risk of synthetic phenols to development and pregnancy arises from their ability to mimic important hormones within the human body. They interact with cell receptors, causing changes to basic processes within the body.
In 2012 and 2014, researchers looked at what effects prenatal exposure to synthetic phenols had on the growth of boys, during and after pregnancy [4,5]. They looked at: Benzophenone-3, Parabens, Triclosan, Bisphenol A and dichlorophenol levels at 12, 22.5 and 32.6 gestational weeks through urine sampling concentrations. The researchers analyzed how phenol concentrations were affecting biparietal diameter (BPD) during pregnancy. BPD is the standard measurement to assess fetal size. BPD measures: head circumference, abdominal circumference and femur length. They sampled 520 mother-son pairs from April 2003 to March 2006 at Poitiers and Nancy University hospitals in France. The results of their studies are summarized below:
Benzophenone-3
Parabens
Triclosan
Dichlorophenol
***Negative association means that as the concentration of the phenol increases, the growth parameter decreases***
***Positive association means that as the concentration of the phenol increases, the growth parameter increases***
The relationship between phenols and pregnancy is in its infancy. Some studies contradict each other, but general trends are emerging about how different phenols can have an effect on biparietal diameter (BPD). Properly measuring phenols are difficult because phenol measurements are made based on urine samples, and certain phenols will degrade before they can be accurately measured (short half-life), plus phenol release from the body is periodic. Due to the volatility and unpredictability of phenols in urine samples, studies looking at how phenol exposure relates to pregnancy are likely subject to exposure misclassification, meaning that researchers may be drawing the wrong conclusions from their data. We need bigger studies with larger samples sizes and better techniques for measuring phenol concentrations.
Even if we are still waiting on more research to happen before drawing final conclusions surrounding phenols and pregnancy, is it worth the risk to take no action towards reducing phenol exposure if you are looking to become pregnant or are currently pregnant? The answer is no! Phenols play a complex role in the body by mimicking important hormones. At high enough concentrations phenols pose, not only a risk to your pregnancy, but to your general health!
If you have heard of MTHFR mutations before but didn’t know where to start. This article is for you! It will give you a foundational understanding of biology while introducing you to MTHFR and fertility.
Genes are the deoxyribonucleic acid (DNA) sequences responsible for making proteins and enzymes. Gene expression is the process of the body actually using the gene to produce a protein or enzyme. Many factors contribute to gene expression and gene expression changes throughout life. For example, gene expression is different before puberty and after puberty, or before menopause and after menopause. Gene expression also changes due to psychological, environmental and dietary factors.
DNA is made up of four building blocks: adenine (A), thymine (T), guanine (G) and cytosine (C). Genetic mutations are changes within a sequence of DNA. For example, an “A” might change to a “C”, or a “T” might be removed/added to a DNA sequence. There are multiple forms of genetic mutations that are beyond the scope of this article. It is important to know that genetic mutations mostly have negative consequences on the performance of their products (i.e enzymes).
Enzymes are proteins that help build, break down, and/or speed up biochemical reactions within the body. Some chemical reactions would take days, weeks, or months to happen, but enzymes make these reactions happen much faster. Without enzymes, life as we know it would not be possible. Chemical reactions would be too slow within the body, and we would not have the capacity to produce the necessary chemicals for survival.
MTHFR stands for Methylenetetrahydrofolate reductase. The MTHFR enzyme is made from the MTHFR gene. The MTHFR gene contains the genetic information required to make the MTHFR enzyme. It is the enzyme responsible for the final step in the folate cycle. When the MTHFR enzyme is not functioning properly, there is a shortage of important biochemical substances and a build-up of harmful substances within the body. MTHFR gene mutations impair the body’s ability to perform many crucial tasks.
Some people, approximately 30-50% but some research shows possibly 70-75%, have genetic mutations in their MTHFR gene (3). As more people have their genomes sequenced around the world, we will get a better understanding of how prevalent MTHFR mutations are around the world. Different populations of people around the world have different frequencies of MTHFR mutations, for example, the highest concentration of MTHFR C667T mutations in the world are found in Italy (1). These mutations affect the ability of the MTHFR enzyme to complete the final step in the folate cycle. MTHFR mutations lead to a complex cascade of biochemical reactions that cause a wide variety of health and fertility issues.
According to a new scientific review published in July 2017, in the Journal of Genes and Genomics, MTHFR mutations play a role in the following multifactorial diseases (2):
The health consequences of MTHFR are so far-reaching because the MTHFR enzyme is crucial to basic functions within our bodies. If you are wondering how one gene/enzyme can have such a wide variety of consequences, without getting too involved in the science, you need to gain a basic understanding of how MTHFR mutations actually create health and fertility problems.
There is not just one kind of MTHFR mutations there are several (MTHFR C667T and A129C are most common). Each mutation lowers the functionality of the MTHFR enzyme to varying degrees. Having an MTHFR mutation is like your body building a single lane bridge in the middle of a busy city when the bridge should be at least four lanes wide. It significantly reduces the number of cars (i.e biochemical reactions) that can use the bridge at one time and creates a traffic jam on both sides (i.e build up of biochemical products).
Hopefully, you now have a basic understanding of MTHFR. If you are looking for more information on MTHFR, there are multiple articles surrounding how MTHFR Mutations affects your overall health and fertility that can be found below: