Our society is suffering from estrogen overload. No, I’m not referring to Sex and The City reruns—estrogen overload refers to the increasing amount of estrogen in our environment, our food and our bodies.

“Good” Estrogen

Estrogen, the primary female sex hormone, is responsible for normal body processes in women such as secondary female sex characteristics, menstruation, fertility, protein synthesis, bone density, metabolism and much more. Actually, there are three kinds of estrogens in the body: estrone, estradiol, and estriol, which all have specialized roles to play at different points in a woman’s life.

Although estrogen levels are greater in women, estrogen is also needed for libido and maturation of sperm in men.

Sources of Environmental Estrogens

Synthetic (or environmental) estrogens are known as xenoestrogens, or estrogen-mimickers. Although they are not strictly estrogen, their similar structure allows them to bind to estrogen receptors in the human body, causing estrogenic activity.  

• Drugs and Medicines

A primary source of estrogen comes from taking oral contraceptives, which contain high amounts of synthetic female sex hormones. And what happens to all the hormones in drugs and oral contraceptives? Well, the excess estrogen leaves the body in urine, which then enters the water supply which everyone (men and children included) consumes daily. 

Hormone Replacement Therapy (HRT), is another form of synthetic hormones, often used for women suffering from menopause symptoms. HRT has been linked to breast cancer, blood clots, heart disease and strokes.

• Natural Food Sources

Plants with estrogenic activity are called phytoestrogens, the most common of them being soy. Although this estrogen is not synthetic, it can still affect one’s health by raising estrogenic activity. For this reason, people, especially men, may wish to avoid excessive soy intake. (For a great look at the issues surrounding soy, read Liz Thompson’s Green Blog article “Soy: Super Food or Troublemaker?”)

• Synthetic Food Sources: Dairy and Meat

In the USA, dairy and beef cattle are given synthetic estrogens so they grow faster and produce more milk. In Canada, growth hormones are only allowed in beef cattle. However, since hormones are stored in fat cells in the body, these growth hormones end up in the milk, cream, yogurt, cheese and meat we eat on a daily basis.

• Synthetic Food Sources: Pesticides and Herbicides

Pesticides can be dangerous estrogen-mimickers, and unfortunately, its hard to tell what has chemicals and what doesn’t. Generally, most food that is not 100% certified organic has come been grown with pesticides and herbicides, or has come into contact with the chemicals during processing. As well, many lawns, gardens and parks receive chemical treatments on a regular basis.  

• Plastics

Bisphenol-A (BPA) is a harmful xenoestrogen found in number 7 plastics. Primarily, its used in water bottles, tin cans, baby bottles and food storage containers. Heating and freezing these plastics (even by leaving a water bottle in a hot car) further the release of the toxins into the water, to be ingested. (See “BPA Update: Examining the Plastic Debate 1 Year Later” in this blog for more details.)

While bisphenol-A was designed to keep plastics hard and unbreakable, phthalates are a type of plastic designed to keep plastics soft and flexible. Research has shown that phthalates are powerful endocrine disruptors for growing bodies and can even cause birth defects. The iconic rubber duck is a prime of example of phthalates at their worst. Even worse, they’re marketed to the most vulnerable demographic—children. The recent book Slow Death By Rubber Duck tackles this issue in full http://slowdeathbyrubberduck.com/. The writers also analyse many other household toxins, including more examples and effects of xenoestrogens.

• Cosmetics and Other Products

Sadly, so many products marketed to women and used every day contain dangerous chemicals. Cosmetics, hair dyes, nail polish, chlorine-bleached feminine sanitary napkins, sunscreens and household cleaning products are just some of the products that contain dangerous xenoestrogens.

Effects of Environmental Estrogens

So we’re getting lots of estrogen…does it matter? Well, although big business doesn’t want you to think so, it matters. It is well known that oral contraceptives with synthetic estrogens can cause breast cancer, strokes and blood clots. What is less publicized, however, is how the smaller amounts of environmental estrogens affect people.

In women, environmental estrogens can wreak havoc on the body’s delicate reproductive system, causing all kinds of problems. Some examples include: early puberty, painful period cramps, irregular menstrual cycles, heavy periods, PMS, fibroids, endometriosis, cysts, low sex drive, infertility and menopause symptoms.

Unfortunately, when these conditions become too difficult and painful to deal with, doctors recommend (often unnecessary) hysterectomies. Canada and the USA have the highest rates of hysterectomies in the world. However, even after childbearing years, the uterus is important extremely important. Removal of the uterus has been linked to depression, osteoporosis, risk of heart disease and stroke, loss of libido, and increased rate of reproductive cancers.

But…I’m a Guy

Men can be affected too! In fact, recent research has suggested that men are being affected in extreme ways that we are only beginning to realize. The CBC documentary “The Disappearing Male” provides an insightful look at these issues and is definitely a must-watch! To give a glimpse, here are some scary but true statistics from the documentary:

• “The quality of sperm is declining. Eighty-five per cent of the sperm produced by a healthy male is DNA-damaged.
• The average sperm count of a North American college student today is less than half of what it was 50 years ago.
• The number of boys born with penis abnormalities and genital defects has increased by 200% in the past two decades.
• Paternal exposure to solvents, pesticides, and metals has now been associated in animals and humans with the occurrence of spontaneous abortion, low birth weight, birth defects, childhood leukemia, brain cancer, change in the male to female sex ratio of offspring.”

(Source: http://www.cbc.ca/documentaries/doczone/2008/disappearingmale/index.html)

Prevent Estrogen Dominance

• Diet

Dietary estrogens are one of the easiest to avoid. If you eat meat of dairy, avoid commercially produced brands. Instead, opt for local or organic dairy and meat products which do not contain growth hormones.

If you consume soy on a regular basis, look for alternatives. Other protein sources include beans and lentils, lean meats and fish, nuts and seeds, and grains like quinoa. Non-dairy milk alternatives include beverages made from almonds, hemp, potatoes or rice. 

Whenever possible, eat organic produce and grain products as well. Remember, xenoestrogenic activity is caused by pesticides and herbicides as well.

• Supplements

At your local health food store, you can find supplements to reduce environmental estrogens, while restoring the healthy estrogens. Examples include herbs like vitex and black cohosh. Women’s supplements can treat menopause symptoms, low libido, PMS and more. There are hormone-balancing supplements for men as well.

Liver supplements (milk thistle, green tea extract, etc) are extremely important for men and women, since the liver is responsible for cleansing the body of toxins.

• Avoid Environmental Estrogens

Try to avoid plastics as much as possible, especially in children’s toys. In water bottles and food containers, avoid number 7 plastics. Never freeze or heat plastic containers or bottles. Don’t use pesticides, herbicides or other chemicals on your lawns or gardens. Use natural cosmetics, skin, nail and hair care products whenever possible. Use natural cleaning products in your home.

I Think I Have Too Much Estrogen!

If you believe you’re suffering from estrogen dominant conditions, look into visiting a naturopath who can prescribe natural hormone-balancing vitamins, herbs and homeopathic remedies.

Many young girls who experience period cramps or other estrogen dominant conditions are put on oral contraceptives by doctors. The birth control pill doesn’t fix these symptoms, it hides them, while exposing girls to further health risks from the pill. 

If you’ve been to a doctor and had hormone tests, and the results come back normal, don’t be convinced. The range of estrogen levels doctors consider “normal” is too wide to be accurate. Everyone is different—what may be normal for someone else may be too high for you. A good naturopath will take thorough hormone tests, combined with other methods to determine your individual situation. For those who have not been to a naturopath before, it is a shockingly different experience than a traditional trip to the doctor. The visits can last over an hour and the naturopath takes time to listen and understand all your detailed concerns, symptoms and history, before suggesting treatment of any kind.

By now, most people have now heard of BPA (or bisphenol-A), the chemical found in polycarbonate plastics. BPA is most often founds in clear, hard plastic water bottles, food containers and baby bottles (when in doubt, BPA is found in number 7 plastics). As of April 2008, BPA has received considerable press attention for health and safety concerns. Canada is the first country to ban the import of baby bottles that contain BPA. Furthermore, in October of last year, the Canadian federal government added BPA to its list of toxic substances.

The reason? BPA mimics the hormone estrogen. Over the years, estrogens and estrogen mimickers are becoming increasingly prevalent in our society. Common causes include dairy and meat growth hormones, hormones from birth control pills being released into the water supply and polycarbonate plastics. Even certain foods, such as soy, can mimic human estrogen, causing a rise in hormone levels in the body. Harmful to both men and women, BPA exposure has been linked to insulin resistance, obesity and infertility. BPA has also been linked to abnormal growth in breast, uterine, ovarian and prostate cells, which may lead to cancer. Infants are especially sensitive to such chemicals, explaining the ban on BPA baby bottles. The plastic industry, of course, denies such claims.

However, even those who support the use of BPA explain that plastics made from BPA should be used carefully. For example, they should not be frozen or heated at high temperatures. This is extremely difficult, though, when infant bottles are meant to have milk heated inside them. Also, may people bring their plastic water bottles on a hot day, or leave them in a hot car. These actions further the release of the toxins into the water, to be ingested.

Although the recent concern over BPA is due to safety concerns for humans, the chemical is also dangerous to the ecosystem. An environmental pollutant, BPA is also harmful to the reproductive systems of fish and other marine life. Indirectly, plastics are well known to stay in landfills for hundreds of years or pollute oceans.

Since the media spotlight on BPA, some companies have made wonderful changes. On the other hand, many big-name brands haven’t done much. Perhaps the most remarkable change is the opportunity for small companies that catered to (previously) niche markets of stainless steel and glass products to become mainstream. Still, the hype for “BPA free” everything has resulted in confusion over what “BPA free” truly means.

Water Bottles

The most BPA confusion has resulted from the water bottle industry. Since 2008, companies such as Mountain Co-op and Lululemon voluntarily removed water bottles containing BPA. Retailers like Starbucks, however, continue to sell number 7 plastic containers for hot and cold beverages.

As far as plastic alternatives go, not all metal bottles are created equal. Aluminum bottles (such as SIGG) may be lightweight, but they are always coated with a thin plastic layer. There is much controversy regarding how safe the plastic lining is, and whether it may contain trace amounts of toxins.

To avoid these controversial plastics, choose bottles made from 100% food grade stainless steel with no plastic lining. Stainless steel is non-toxic, durable, easy to clean and does not rust. Also, make sure that the plastic used for the lid is BPA free. Good examples include Klean Kanteen, Green Bottle, Purica and Bilt.

Tin Cans

Many people don’t know that the lining of tin cans contain BPA. However, since most people use tin cans more often than water bottles, they’re more of a concern than previously thought. As well, most food is heated at extremely high temperatures before being packed in cans, increasing their BPA content. There are very few brands of canned products that are not lined with BPA. Over the past year, many companies has expressed interest in using BPA free cans, but have not made the switch yet.

Eden Organics has been producing BPA-free canned products since 1999. Instead, they line their cans with “Oleoresin”, an expensive but naturally-derived oil and a resin mixture. Their line includes delicious canned beans, tomatoes, rice, lentils and chili.

For other BPA free alternatives, opt for dried soup mixes, and products such as pasta sauces in glass bottles. When cans are unavoidable, refrain from heating the cans and use the product as soon as possible, since the lining leaches more BPA over time. Keep in mind that BPA breaks down and leaches into food faster in the presence of fatty foods like fish, and acidic foods like tomatoes.

Food Storage

Replacing Tupperware with BPA free alternatives has never been easier. Preserve brand plastic food storage containers are made from recycled number 5 plastic, and come in a wide variety of shapes and sizes. Of course, Pyrex glassware is a dependable staple for food storage and cooking.

Baby Bottles

There have been substantial gains in the baby bottle industry. As mentioned, baby bottles that contain BPA were banned in Canada. The company Born Free offers glass bottles that are growing in popularity. For those who prefer plastic bottles that have less chance of breaking, Green to Grow bottles are made from recycled material, dishwasher safe and BPA lead, phthalate and PVC free. Still, there is a long way to go, since many “BPA free” plastic baby bottles were recently found to contain trace amounts of the chemical.

Thus, the past year has opened up a lot of discussion in the BPA debate, and no doubt there is much more on the way. I appreciate any discussion on the topic, whether you agree or disagree, or if you know of more bisphenol-A alternatives I haven’t mentioned.