This discussion features Clayton Page Aldern, a neuroscientist and author, Dr. Burcin Ikiz, Chair of the International Neuro Climate Working Group, and Professor Joshua Carlson from North Michigan University. They dive into how climate change negatively affects mental health, increasing climate anxiety and altering brain function. The presence of neurotoxins linked to extreme weather is unveiled as a hidden crisis contributing to neurological diseases. The conversation also explores the concept of neuroplasticity, highlighting both the challenges and potential resilience in facing these eco-psychological impacts.
Extreme heat negatively impacts human behavior and mental health, leading to heightened aggression and impaired decision-making in various contexts.
Climate anxiety has a neurological basis linked to a salience network, influencing both motivation for pro-environmental actions and the risk of disengagement.
Deep dives
Impact of Extreme Heat on Mental Health
Extreme heat significantly affects human behavior and mental health, as seen in various studies. Higher temperatures correlate with increased aggression, diminished critical thinking skills, and a higher likelihood of domestic abuse and assault. For example, it has been observed that baseball pitchers are more prone to intentionally hitting batters on hotter days, reflecting a real-time manifestation of climate-induced stress. This highlights the pressing need to consider how environmental conditions can directly shape human interactions and decision-making processes.
Neurotoxins and Climate Change
Climate change exacerbates the contamination of water and soil, leading to an increase in neurotoxic substances that are harmful to human health. Warmer temperatures and extreme weather events contribute to algal blooms, which produce neurotoxins linked to neurodegenerative diseases such as ALS and Parkinson's. With the likelihood of these toxins entering food and water supplies, there is a growing concern about their long-term impact on public health, especially since they can cross the blood-brain barrier. As neurotoxins become more prevalent, the potential for increased rates of neurological disorders in exposed populations becomes a critical issue.
Connection Between Climate Anxiety and Brain Function
Research indicates that climate anxiety may have a neurological basis, functioning within a brain network responsible for monitoring environmental cues. This salience network appears to show structural and functional differences in individuals with varying levels of climate anxiety, suggesting a biological underpinning for this psychological phenomenon. Interestingly, while moderate climate anxiety can motivate pro-environmental behaviors, excessive anxiety may lead to avoidance or disengagement from helpful actions. This complexity suggests a nuanced relationship between emotional responses to climate change and individual behavior towards environmental issues.
The heating climate is now recognised as a threat to our inner world – to brain health and rationality. Extreme temperatures not only impact our ability to think and our decision-making they also increase the presence of neurotoxins in the environment. And that can lead to disease and mental degeneration. We speak with the head of the newly formed International Neuro Climate Working Group. Climate anxiety is also caused by changes in our brains. So, is that a blessing or a curse?