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Tag: fertility

Published on Leave a comment on Air Pollution and Male Fertility
Human sperm Credit: Wikipedia

Studies find that male fertility is diminishing, with sperm counts decreasing globally every year in the past few decades. Scientists have been searching why this is occurring, suggesting a number of possible causes (e.g., environmental pollutants, pesticides, microplastics, endocrine disruptors, lifestyle habits.).

Recent studies are suggesting that pollution, especially air pollution, may be also be contributing to the problem of reduced male fertility. Researchers are finding regional differences in sperm count and quality.

Two recent studies presented similar findings at the recent European Study of Human Reproduction this past week, with both finding that where you live could have a bigger effect on sperm count, sperm quality, and fertility than lifestyle habits. In other words, the pollution in the area you live (air pollution or other environmental contaminant) has an effect on fertility - that is, sperm count and quality. [Studies show that lifestyle habits are also important.]

From Medical Xpress: Men living in different regions show marked differences in sperm quality despite similar lifestyles, novel study finds

A new study has found substantial regional differences in sperm quality, with men in the highest-performing region recording almost double the total motile sperm count of those in the lowest-performing region. ...continue reading "Air Pollution and Male Fertility"

Published on Leave a comment on Useless Female Organ Discovered To Have A Purpose
Ovary Credit: NIH

Well, well, well...it turns out that an organ in women long considered useless ("a vestigial structure") actually has a purpose.  A recent study found that the rete ovarii may have an important role in the function of the ovaries, and therefore fertility.

The rete ovarii has 3 regions and responds to hormonal signals. It is a horseshoe-shaped network of tubes nestled beneath the ovary.

The study used female mice, but the researchers think the results also apply to humans. Other species of  mammals (e.g., cows, sheep, dogs, cats, monkeys) also have a rete ovarii.

From Live Science: 'Useless' female organ discovered over a century ago may actually support ovaries, study finds

An unsung appendage in the female body, which has long been considered useless, may actually be essential for ovary development and fertility, a new mouse study finds. ...continue reading "Useless Female Organ Discovered To Have A Purpose"

Published on Leave a comment on Common Pesticide Found In Human Semen
Sperm Credit: Wikipedia

Pesticides stick around in the environment and in humans. Thus, it shouldn't be a surprise that a recent study found the pesticide glyphosate in men's sperm.

Glyphosate (also known as Roundup) is the most commonly used herbicide (weed-killer) in the world. It is used on both genetically modified crops (Roundup Ready crops), as well as conventional crops. [It is not allowed to be used on organic crops.] This means we ingest glyphosate when we eat nonorganic foods, when we breathe air that is contaminated with glyphosate (from applying the product or from nearby applications), or we get it on our skin.

In the study, 128 men with fertility problems had their blood and seminal fluid analyzed. Glyphosate was detected in the blood of 72 of the men, and in these men glyphosate was also detected in the seminal fluid (semen). Surprisingly, glyphosate levels were 4 times higher in the seminal fluid than in the blood!

Smokers had blood and seminal plasma concentrations twice as high as non-smokers, and workers on farms had higher levels than non-farm jobs (e.g., transport, communication, finance). The person with the highest glyphosate concentration was a farmer. They also found that in this study there was no difference in the sperm concentration, movement, or shape/abnormal forms between men with or without glyphosate in the blood.

However, oxidative stress was shown to be higher in men with glyphosate in the blood and seminal fluid. Oxidative stress is known to have harmful effects on sperm (e.g., injures mitochondria, sperm dysfunction). Thus, the researchers concluded that glyphosate has a negative effect on male reproductive health.

To lower your glyphosate levels: Your levels can be reduced within days by switching to an organic diet. Also, don't use Roundup for weed control. If possible, use non-toxic alternatives in your yard (e.g, vinegar, boiling water, burn weeds with a Dragon torch, hand weed, or accept weeds as "wildflowers").

Excerpts from Beyond Pesticides: Presence Of Weed Killer Glyphosate In Human Sperm Elevates Debate On Pesticide Threats To Human Survival

A study published in the most recent edition of the journal Ecotoxicology and Environmental Safety documents for the first time the presence of the herbicide glyphosate in human sperm. The study looked at 128 French men with an average age of 36 years who tested positive for glyphosate in their blood. ...continue reading "Common Pesticide Found In Human Semen"

Published on Leave a comment on Top Scientists Explain How Harmful Chemicals Are Affecting Reproductive Health and Development

There is much concern nowadays about all the many chemicals we are exposed to in our lives. These include pesticides, heavy metals (e.g. lead, mercury), and chemicals that act as endocrine disruptors (hormone disrupting chemicals), such as BPA and phthalates. These chemicals are all around us and are linked to all sorts of health effects, including chronic diseases and reproductive effects - such as infertility, declining sperm counts, adverse effects on the developing baby, and endometriosis.

There is an excellent 7 part series of webinars that one can watch called Generation Chemical: How Environmental Exposures are Affecting Reproductive Health and Development. Big names in the field discuss the latest science on the impact of harmful chemicals and pollutants on female and male reproductive health, pregnancy, and development, starting from preconception and through  life.

Yes, it's in depth, but also eye-opening. For example, the evidence is now raising the questions: Are fertile people healthier? Does poor sperm quality mean poorer health? Or earlier death? Research suggests that sperm count and quality are "canaries in the coal mine" for male health - evidence of harm to men from environmental and lifestyle influences.

Also, keep in mind that while you can't totally avoid harmful chemicals, you can really minimize your exposure and the levels measured in you. Avoiding Harmful Chemicals gives good ways to reduce exposures to harmful chemicals. This is especially important for both males and females if thinking about conception or pregnant.

SEVEN PART WEBINAR SERIES: 1) Introduction. Oct. 29, 2020. Discussed declining sperm counts that have been occurring worldwide over the last few decades - 52.4% decline in 38 years among men from Western countries, and the decline is still continuing. Effects of endocrine disrupting chemicals (EDCs) on men's and women's fertility, conception delay, pregnancy loss, some diseases, and endometriosis. ...continue reading "Top Scientists Explain How Harmful Chemicals Are Affecting Reproductive Health and Development"