Exposure to toxic chemicals, combined with the effects of climate change, is a growing concern for fertility. This combination appears to have a powerful impact, potentially leading to lower fertility rates in many species around the world, according to a study reported by The Guardian.
A peer-reviewed study reveals that chemicals, often found in everyday plastics, disrupt hormones and, when combined with climate stressors like heat, significantly worsen fertility issues. These dangers are not just theoretical; they affect humans, wildlife, and other living organisms alike.
Susanne Brander, a researcher at Oregon State University, describes the situation as alarming. She emphasizes that simultaneous exposure to both toxic substances and climate stress has a far worse effect on fertility than either alone. In her words, “You’re not just getting exposed to one – but two – stressors at the same time.” This dual exposure raises cause for concern.
The study reviewed findings from 177 different analyses, pointing out that substances like microplastics and phthalates can severely impact hormone function. These chemicals are widespread in consumer goods, leading to regular exposure and damaging sperm quality and shape.
Climate change adds another layer of challenges, with rising temperatures and lower oxygen levels causing stress. This impact is so severe that it has been shown to alter sex determination in some fish and amphibians and affects hormone levels in mammals, including rodents and bulls.
The research also identifies alarming trends in various animal groups. For instance, the combination of rising temperatures and exposure to harmful chemicals like PFAS could result in severe reproductive issues in birds, such as abnormal testes and higher fledgling mortality rates.
Shanna Swan, another author of the study, has previously highlighted that sperm counts in Western countries have halved over the last four decades. Research suggests that many nations may not maintain their population by 2050, falling below replacement fertility levels.
Brander points out that the combined effects of multiple stressors are still largely unexplored. However, it’s reasonable to assume that the impact of two harmful factors acting together is more severe than one. The urgency for action is evident, as there’s enough evidence to warrant immediate steps toward reducing our environmental impact and regulating harmful chemicals.
For anyone interested in reading more about these issues, check out the research findings shared by [Harvard Health](https://www.health.harvard.edu) on the link between environmental factors and fertility.
Source link
fertility drop, endocrine disrupting chemicals, climate change impact, reproductive health, microplastics effects
