Environmental toxins: a barrier to natural fertility?

This interesting article from the LA times appeared on my twitter page recently  


"Chemicals in plastics can increase testosterone in men"


Every day we are exposed to various different chemicals. We are largely unaware of what the detrimental effects of these substances may be on our health, and in the case of many of my patients, what impact they may have on our fertility.


Xeno-oestrogens

"Xenoestrogens are novel, industrially made compounds, estrogenic effects and differ chemically from ancient naturally occurring oestrogenic substances produced by living organisms. Their potential ecological and human health impact is under study”

source: http://en.wikipedia.org/wiki/Xenoestrogen

Xeno-oestrogens are chemicals that mimic the hormone oestrogen in the human body. Oestrogen is crucial in fertility. It signals the release of other hormones to trigger ovulation. It is needed for a healthy womb lining so that embryos may implant successfully. It stimulates the secretion of cervical mucus, and it causes softening and opening of the cervix facilitating the passage of sperm to egg. Obviously women produce lots of this hormone but men also produce it. For oestogens to do their job they must bind with special oestrogen receptors in the human cell. Unfortunately Xeno-oestrogens might also link with these cell receptors and thus prevent oestrogen from working. Obviously this could have detrimental effects on fertility. It has been speculated by some that xeno-oestrogens may also be affect testicular function. As such they have been linked to decreased sperm count and quality and also increased damage to sperm DNA among other things. They are also being linked to a whole range of issues within female reproductive function and pregnancy, such as PCOS, endometriosis and miscarriage.

Dioxins

Dioxins are another group of chemicals produced by a variety of industrial processes. Dioxins are linked to a range of problems but with regard to fertility in women they are implicated in endometriosis and miscarriage. In men they are linked to poor semen quality. The main source of of dioxins is diet, and the worst offenders being beef and dairy produce followed by other meats and eggs.

What you can do to help yourself

The main way in which xeno-oestrogens are likely to enter the body is via pesticides and plastics, but they are also present in a wide range of items such as toiletries. I always recommend my patients to eat organically for a whole host of reasons and this is just one more. You may want to evaluate how you prepare, cook and store your food. It may be advisable not to microwave food in plastic containers or covered with plastic wrap, and don't put hot food into plastic containers as this may encourage molecules of plastic to leech into the food.

The Xeno-oestrogen Bisphenol A is present in the lining of canned food and has been linked with polycystic ovary syndrome (PCOS).

Phthalates are present in many cosmetics especially nail varnishes and those products containing some form of scent. If possible look for those that are "phthalate free".

Another product to look out for is parabens this is used as a preservative in certain cosmetics.

Many nutritionists advocate a diet rich in phyto-oestrogens to counteract the effects of of xeno-oestrogens. These may be obtained from many sources, flax seed and soya being  especially good. Nuts, seeds and pulses are all excellent.

Dioxins are stored in fat, so reducing the amount of animal products we eat is the most effective way to limit the impact dioxins may make on ones fertility. Dioxins are also stored in our own body fat so losing weight ourselves is again useful.

In conclusion. While the science behind these theories is at best uncertain, the steps we may take to protect ourselves from environmental toxins don't look particularly unreasonable or outlandish.

Basically eat organic produce, reduce the amount of plastic & packaging in our lives, use more products that contain less chemicals and eat less meat and dairy. Even if our bodies dont thank us I'm sure the planet will.