Count Down: How Our Modern World Is Threatening Sperm Counts, Altering Male and Female Reproductive Development, and Imperiling the Future of the Human Race By Stacey Colino

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In the tradition of Silent Spring and The Sixth Extinction, an urgent, “disturbing, empowering, and essential” (Kirkus Reviews, starred review) book about the ways in which chemicals in the modern environment are changing—and endangering—human sexuality and fertility on the grandest scale, from renowned epidemiologist Shanna Swan.In 2017, author Shanna Swan and her team of researchers completed a major study. They found that over the past four decades, sperm levels among men in Western countries have dropped by more than 50 percent. They came to this conclusion after examining 185 studies involving close to 45,000 healthy men. The result sent shockwaves around the globe—but the story didn’t end there. It turns out our sexual development is changing in broader ways, for both men and women and even other species, and that the modern world is on pace to become an infertile one. How and why could this happen? What is hijacking our fertility and our health? Count Down unpacks these questions, revealing what Swan and other researchers have learned about how both lifestyle and chemical exposures are affecting our fertility, sexual development—potentially including the increase in gender fluidity—and general health as a species. Engagingly explaining the science and repercussions of these worldwide threats and providing simple and practical guidelines for effectively avoiding chemical goods (from water bottles to shaving cream) both as individuals and societies, Count Down is “staggering in its findings” (Erin Brockovich, The Guardian) and “will serve as an awakening” (The New York Times Book Review).

At this time of writing, The Ebook Count Down: How Our Modern World Is Threatening Sperm Counts, Altering Male and Female Reproductive Development, and Imperiling the Future of the Human Race has garnered 10 customer reviews with rating of 5 out of 5 stars. Not a bad score at all as if you round it off, it’s actually a perfect TEN already. From the looks of that rating, we can say the Ebook is Good TO READ!

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Disclosure: I work at Legacy, a leading fertility company. Our CEO admires the work of Dr. Swan and so purchased the book for each team member to read through.Countdown is very much an academic work in the style of Orientalism or On the Origin of Species and feels as though its sweeping insights will impact policies, perspectives, world plans. It is as urgent as Silent Spring or The Jungle. Throughout the book, Swan demonstrates that sperm counts and concentrations have been dropping - and not dropping, but dropping cataclysmically, dramatically - over the past 50 years. Her earlier work identified the drop in Western men. Here she lays out a case showing it is impacting not only all men, but all animals, too.Why is it happening? The core culprit, she submits, are endocrine disruptors. Drugs, plastics, phthlates, 'forever' chemicals that we've been manufacturing and circulating into our environment and bodies since especially World War II. She presents her argument in a highly digestible format with strong evidence, decades of meticulous research, and caution about how to interpret the research. This is how you wish every academic would communicate complicated work to the general public.The associated arguments that connect out of that far-reaching theory are, frankly, sweeping. The most obvious impact is that fertility rates are not only plummeting because couples are choosing to have children later in life and women are empowered to prioritize careers but also because when they DO try to have children later in their life, it is harder than it would have been at that age just 30 years ago. Lifestyle changes are clashing with biological changes, suggesting fertility rates will continue to plummet in an unsustainable way. The suggested impact is societal instability. What Swan does not state that many in the media have since her book released is that the end state could be a broadly infertile population.Swan is keen to point out the psychological impact these biological changes are having. Often women take blame and feel self blame when they experience miscarriages. Swan points to growing bodies of evidence that show men's sperm are often responsible for whether there is a miscarriage or not: the higher the DNA fragmentation in a man's semen sample, the more likely there will be a miscarriage.Perhaps the freshest perspective here is Swan's argument that endocrine disruptors are wreaking hormonal havoc on fetuses in the womb, leading to hormonal imbalances that result in children being born in to the wrong sex. Swan makes this argument considerately and somewhat convincingly. And although it's not an apples to apples comparison, she points to the increase of sexual dimorphism among animals who have been affected by these same 'forever' chemicals that the changes happening to our bodies are happening to all life on this planet as well. The implications of our having placed nature out of balance, much like we have with climate change, are troubling.I left this book, unfortunately, very cynical. I appreciated the information on lifestyle changes that can result in my sperm performing better. But I worry about our societal ability to act on the research that effectively invisible chemicals we've begun using everywhere are resulting in life's hormonal ruin. We have been slow to act on climate change, whose impact, relatively speaking, has been invisible and slow, but whose solutions are well understood. The solutions for eliminating our environment of endocrine disruptors are far less understood, the urgency from the public to act is far smaller (I didn't know this was a problem!), and their invisible rate of change on our bodies has been, relatively speaking, far faster. It worries me about where we'll be as a society 25 years from now.

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