Shanna Swan, an environmental and reproductive epidemiologist at the Icahn School of Medicine at Mount Sinai, New York in her new book states that due to low counts and changes to sexual development, human beings are at great risk.
In her new book, Shanna Swan, an environmental and reproductive epidemiologist from the Icahn School of Medicine at Mount Sinai – New York, explains how the impending fertility crisis represents a global threat comparable to the climate crisis.
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“The current state of reproductive affairs can’t continue much longer without threatening human survival,” writes the specialist in her work ‘Count Down: How Our Modern World Is Threatening Sperm Counts, Altering Male and Female Reproductive Development, and Imperiling the Future of the Human Race’.
In a 2017 study she co-authored, Swan found that sperm counts among men in the West had plummeted 59% between 1973 and 2011. According to current projections, the average sperm count will reach zero in 2045, alert the epidemiologist.
In their new book, Swan and co-author Stacey Colino talk about how modern life is threatening sperm count, changing male and female reproductive development, and endangering the existence of humans.
Although there are social factors, such as cultural changes and the high cost of having children, that do not contribute to the current fertility scenario, Swan cautions that there are also biological reasons behind this, including the increase in miscarriage rates, of genital abnormalities among boys and earlier puberty for girls.
“Chemicals in our environment and unhealthy lifestyle practices in our modern world are disrupting our hormonal balance, causing various degrees of reproductive havoc,” writes the specialist.
Swan blames “chemicals everywhere“, which affect the endocrine systems of humans. The specialist also said that factors such as smoking, marijuana use, and the increase in obesity rates globally can contribute to low fertility.
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The problem is so serious that, according to Swan, humans could become an endangered species.