Our Blood Chemistry is Changing: A Disturbing Reality Unveiled
In a recent study, scientists have uncovered a shocking truth: the rising levels of carbon dioxide (CO2) in our atmosphere are not just an environmental concern, but a potential health threat as well. This revelation has sparked a wave of curiosity and concern, leaving many to wonder about the long-term implications for human health.
The Evidence Unveiled
By analyzing health data from a US population database spanning two decades, researchers have identified a clear correlation between increased exposure to CO2 and shifts in blood chemistry. These shifts, while not yet dangerous, are a cause for concern as they mirror the alarming rise in atmospheric CO2, a key driver of climate change.
Respiratory physiologist Alexander Larcombe from Curtin University, Australia, explains, "What we're witnessing is a gradual alteration in blood chemistry that mirrors the increase in atmospheric carbon dioxide." This statement underscores the direct link between our environment and our physiological health.
A Gradual, Yet Alarming Shift
The study's modeling predicts that if current trends persist, certain blood chemistry values could reach the limits of the healthy range by 2076. Specifically, average bicarbonate levels could approach the upper limit of the accepted healthy range within the next 50 years, while calcium and phosphorus levels could reach the lower end of their healthy ranges later this century.
But here's where it gets controversial: the fossil record reveals that Earth's atmospheric CO2 levels have remained relatively stable for at least 150,000 years, with concentrations hovering around 280 to 300 parts per million (ppm). However, in recent decades, this balance has been disrupted, with CO2 levels rising dramatically from around 369 ppm in 2000 to approximately 420 ppm today.
The Role of Bicarbonate
In human blood, CO2 is converted into bicarbonate, a compound that helps maintain healthy pH levels. However, Larcombe and his colleague, retired geoscientist Phil Bierwirth from the Australian National University, proposed that bicarbonate could also serve as a tracer of atmospheric CO2 levels in the blood.
Their examination of blood chemistry data from the US National Health and Nutrition Examination Survey (NHANES) revealed a 7% increase in the average blood concentration of bicarbonate over the study period, from 23.8 to 25.3 milliequivalents per liter. This increase paralleled the rise in CO2 over the same time frame.
The Impact on Calcium and Phosphorus
Interestingly, calcium and phosphorus levels in the cohort showed a contrasting trend, with calcium dropping by 2% and phosphorus by 7%. This could be attributed to the body's response to the increased acidity caused by dissolved carbon dioxide in the bloodstream. To maintain a healthy blood pH, the kidneys conserve bicarbonate, while bones can also buffer acid by exchanging minerals like calcium and phosphorus.
A Delicate Balance
At present, these shifts are minor and within the body's tolerable range. However, the parallel rise is a cause for concern, as it suggests a potential disruption to the delicate balance of our physiological systems. Phil Bierwirth comments, "I think what we are seeing is because our bodies are not adapting. It appears we are adapted to a range of CO2 in the air that may now have been surpassed."
He further explains, "The normal range maintains a delicate equilibrium between CO2 levels in the air, our blood pH, breathing rate, and bicarbonate levels in the blood. With CO2 levels in the air now higher than ever experienced by humans, it appears to be accumulating in our bodies. This may indicate that we can never adapt, making it vitally important to limit atmospheric CO2 levels."
The Takeaway
This study highlights the intricate connection between our environment and our health. As we continue to navigate the challenges of climate change, it's crucial to consider the potential impacts on our physiological well-being. The question remains: how can we ensure a healthy future for our planet and ourselves? Share your thoughts and insights in the comments below!
