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The Effect of Climate Change on Our Brains

  • Writer: Patricia Faust
    Patricia Faust
  • Jul 31, 2023
  • 4 min read


It is obvious and science confirms that we are in the process of climate change. What makes this different from other climate cycles the Earth has gone through? An increase in carbon emissions with a dramatically larger population than ages account for the validity of climate change. Now that we have that figured out – how does climate change impact our brains?


The Past

We think of climate change as a process in the present. But the evolution of the earth was a result of climate change. A recent study by Mark Maslin, a geography professor at University College London looked at humans in the past and how their brains responded to climate change. Millions of years ago there were slow changes in the Earth’s orbit. This occurrence dramatically impacts the East African climate. The climate of East Africa went through extreme oscillations from having huge, deep freshwater lakes surrounded by rich, lush vegetation to extremely arid conditions like we see today in the Great Rift Valley. Maslin commented that “It seems that modern humans were born from climate change as they had to deal with rapidly switching from famine to feast and back again.”


Co-author of the study, Dr. Suzanne Schultz of the University of Manchester said that many new species appeared at this time. Among these species was early Homo erectus with a brain 80% bigger than its predecessors. Today, climate change is considered to be an influence on our behavior. Extremely high temperatures are linked to human violence. Even minor changes in temperature or rainfall showed a 4 percent increase in the likelihood of personal violence and a 14 percent increase in the likelihood of intergroup violence such as riots, ethnic violence, and civil wars. This prediction rings true throughout the United States. Gun violence and mortality rates due to gun violence have substantially increased over the past few years.


Mental Health Consequences of Climate Change

A 2016 White House report made projections of how climate change will affect our brains: “Mental health consequences of climate change range from minimal stress and distress symptoms to clinical disorders, such as anxiety, depression, post-traumatic stress, and suicidal thoughts.” After Hurricane Katrina, New Orleans residents thought of suicide or made plans for it doubled in number. Alcohol consumption shot up. Women displaced into temporary housing tried to kill themselves almost 80 percent more often than the national average. Similar effects have been reported after other disasters: in 1992 after Hurricane Andrew hit Miami-Dade County, the rate of suicide-homicide there doubled.


The literature gets even more specific in the gloomy details of the effects of climate change. Slower-paced climactic shifts can have profound psychological effects.

· Long-term drought in Australia has been linked to a suicide spike among male farmers

· In Brazil, residents of a drought-stricken city had higher rates of depression and anxiety than people living in areas with plenty of water

· Climate-driven illnesses or infections:

o West Nile virus and Lyme disease – can lead to depression and impair cognition and neurological function

· Iron deficiencies and other forms of malnutrition are expected to rise as changing weather affects food production

Climate change also makes it harder to treat mental health problems. Superstorms destroy hospitals and prohibit first responders from doing their jobs. Medication for depression and anxiety and other psychological issues affect the way our bodies regulate temperature. A quarter of the people who died during a heat wave in Wisconsin in 2012 were taking medication to treat a mental illness.


This reads like a doomsday report. Yet there are so many of us who refuse to take this seriously. No doubt that politics, energy company lobbying groups, and the pace of scientific research have really delayed action – but one of the most significant barriers is our own mind.


Barriers Our Brain Puts Up

Our brains have been conditioned through time to pay attention to the present time. Even though there is defined action we need to take, our brains are continually convincing us that the status quo is okay. Evidence to the contrary isn’t on our radar – we just can’t see it because our brains are not registering the disaster that is already happening.


Cognitive dissonance, the mental discomfort created by holding more than one conflicting belief at once, plays a part in denying that climate change is real. We become apathetic. It is too difficult to believe that our daily lives are contributing to a global disaster that has turned millions of people into climate refugees and killed many others.


The average American is ignorant of the ways their lifestyles contribute to climate change. In this ignorance, they are unable to know what they should personally be doing. Adopting energy-efficient appliances, fixing leaky areas of their house, lowering the water heater temperature, and washing clothes in cold water are some easy ways to save on carbon emissions. And finally, we need to acquire an awareness in our part of carbon emissions by taking a hard look at the type of car that we drive.


No matter what we believe at this moment about climate change – it is making an impact on our brain function. We need to become serious in our efforts to end this catastrophic climate slide.


References:

Carpenter, Z. (April 5, 2016). This is your brain on climate change. The Nation.


PBS News Hour. (January 4, 2019). How your brain stops you from taking climate change seriously. Retrieved from https://www.pbs.org/newshour/science/how-your-brain-stops-you-from-taking-climate-change-seriously


Relph, M. K. (March 15, 2019). How climate change affects our brain. Retrieved from https://brainworldmagazine.com/how-climate-change-affects-our-brains/





 
 
 

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March was an unusual month for me.  Normally I work on articles, give presentations and generally just stay tuned to what is going on in the field of aging.  This month I “learned” a lot.  Last year I learned how to write a book.  At the time I took the course I thought it would just be a natural extension of all the writing I had done over the years.  WRONG!!  The actual writing of the book was the easy part.  Putting it together into a book was difficult for me.  The course gave me step by step lessons on constructing a book.  Then editing and formatting were just as challenging.  On June 7 last year the book was published!  It was one of the most satisfying days of my writing career. 

Naturally, when you self-publish, you do not have a publisher promoting the book and getting it in the right categories for best sales on Amazon.  That was crushing because I really didn’t know to appropriately market it.  I am a brain health person!  In December of last year, I purchased a marketing program that is based on statistics.  I am technical minded and so this approach made sense to me.  The course is almost completed.  Can’t wait to see if it improves sales!

The next step I am looking at is recording an audiobook.  This is another venture I knew nothing about.  But I am already tagged on Facebook for marketing of audio book programs.  Facebook picks up everything.  Now my husband was creative director for an advertising agency and when I told him I purchased another class – he couldn’t believe it.  “This was my business.  I know how to do recordings, why didn’t you ask me?” Well, I knew he was an expert in that business, but this audiobook needs to meet all the criteria that Amazon requires for publication.  So, he can take care of the recording part of this audiobook, and I will navigate the process of meeting Amazon’s requirements.  We worked on the book together like this. 

Then I talked with some coaching experts on the viability of starting group teaching programs.  Reading The Boomer Brain book and implementing the Brain Healthy Lifestyle have two entirely different outcomes.  This lifestyle is important to maintaining high cognitive function throughout the later years of our lives.  Look for updates as to when I will roll this program out.

My last learning endeavor was attending a two-day bootcamp for Speakers.  I am really excited about what I learned there.  That is a late this year or next year project, but it is one I am really looking forward to.

 

What Is Happening in April?

The American Society on Aging is having their annual conference in Orlando Florida April 21-24.  This is the largest multidisciplinary conference on aging and the annual conference for Members of ASA.  I have attended a number of these conferences throughout the years, and it is consequential.  Keynote speakers and special events are focused on combating ageism in our society.  Although this is a professional meeting, the attendees come from all aspects of aging services.  They have their work cut out for them this year!

April is Stress Awareness Month.  We should be aware of stress every month and understand how we can break the stress cycle.  These are stressful times, and we need to protect ourselves

Here is a positive one “April is National Volunteer Month”.  When I am working with new retirees who don’t know what to do, I talk to them about volunteering. It is important to have a purpose after you leave the workforce.  There are so many nonprofits who need help in all aspects of their organizations.  It is a perfect way to give back.

Finally – It was Opening Day for the Cincinnati Reds – the oldest major league team in the nation.  Cincinnati takes that responsibility seriously.  There is always an Opening Day Parade through downtown to the Ball Park.  Huge crowds line the streets and every year there is talk of making it an official holiday.  Schools and employers look the other way when there is an empty desk.  No matter what the outcome of the game is, there is so much joy, and you can feel that energy.  I am fortunate that I get to experience that.  We all need some joy right now. 

Enjoy your April.

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