Researchers Explain How Chronic Stress Changes Your Brain

Researchers Explain How Chronic Stress Changes Your Brain


Even as adults, our brains are elastic and vulnerable to change. All the things we do every day can have an effect on our brains – some good, some not so good. Stress can change our brains in a major way, even when we’re unaware of it. That is why making sure you know how to battle stress is so important.

It has long been established that stress-related illnesses, such as post-traumatic stress disorder (PTSD) trigger changes in brain structure, including differences in the volume of gray matter versus white matter, as well as the and size and connectivity of the amygdala,” says endurance athlete, coach and author, Christopher Bergland.

Chronic stress can have an effect on our physical bodies, as well as our brains. Researchers have an answer for what exactly goes on in our brains when they’re subjected to long-term, chronic stress.

Here Are 5 Ways How Chronic Stress Changes Your Brain

“There’s a lot of stress out there, and to handle it, you just need to believe in yourself; always go back to the person that you know you are, and don’t let anybody tell you any different, because everyone’s special and everyone’s awesome.” – McKayla Maroney

1. Affects the production of new brain cells

Our brains are constantly making new brain cells, just the same way that our brains are constantly losing them. When our brains are subjected to chronic stress, it halts the productions of those new brain cells. The things in our brains that cause new brain cells to grow can become disturbed by the effects of stress, which can make it difficult to create new brain cells. This can cause side effects like anxiety, depression and OCD symptoms.

Cortisol creates a surplus of the neurotransmitter glutamate. Glutamate creates free radicals — unattached oxygen molecules — that attack brain cells much in the same way that oxygen attacks metal, causing it to rust. Free radicals actually punch holes in the brain cell walls, causing them to rupture and die,” says author and teacher, Deane Alban.

2. Affects your memories and emotions

Having trouble with our memory is usually the first sign of stress-related issues. Chronic stress can do a number on your short-term memory. It can also make your emotions feel wacky. When you’re dealing with chronic stress, the signals in your brain that are used to help you remember things don’t fire as often. “Ultimately, these changes can affect cognitive function, including changes in learning, memory, and emotional well-being,” says Sundari Chetty, PhD.

3. Stress causes anxiety

Dealing with chronic and long-term stress can affect more than just your short-term emotions. When we are dealing with stress for long periods of time without de-stressing ourselves, the stress can build up in our amygdala, which is the part of the brain that processes fear.

Substantial alterations in myelination have been noted in a number of neurological conditions and could potentially contribute to mental disorders such as anxiety, depression and post-traumatic stress disorder,” adds Chetty.

When dealing with chronic stress, our brains can often get stuck in a feedback loop for fear and anxiety, which in turn causes more stress, which in turn causes more fear and anxiety.

emotional addiction to stress

4. Chronic stress causes inflammation in your brain

The same way that stress on your muscles can cause inflammation in your limbs, stress can cause inflammation in your brain. There is an immune cell in our brain that helps fight off disease. When we encounter stress, our brains send off a signal to the immune system, which causes inflammation in the brain. Unfortunately, if there’s nothing there but stress, our brains stay inflamed until the immune system runs its course. Inflammation in the brain has been correlated to different issues, like anxiety, depression and OCD.

Depression is a complex illness and we know that it takes more than one biological change to tip someone into an episode. But we now believe that inflammation in the brain is one of these changes and that’s an important step forward,” says Dr. Jeffrey Meyer.

5. Stress decreases your serotonin

Depression is often linked with chronic stress due to the fact that when our brain faces a lot of stress without any breaks, it often stops producing serotonin and dopamine. Serotonin and dopamine are otherwise known for making our brains happy. When we laugh, smile, see something we like, or have fun, all of these things cause a burst of dopamine and serotonin in our brains, which gives us the signal that “this is good!”.

Unfortunately, stress stops the production of those chemicals, which can cause depression, because our brains are no longer getting the chemicals that help make us happy; instead, they get an unlimited dose of cortisol.

With chronic stress, cortisol doesn’t get switched off…  It’s responsible for weight gain, particularly increased abdominal fat, and it’s been implicated as the leading cause of osteoporosis, digestive problems, hormone imbalances, cancer, heart diseases and diabetes. Cortisol depletes serotonin and dopamine levels. It actually damages the receptor sites of these neurotransmitters,” adds Australian Spinal Research Foundation.

Stress can have all kinds of effects on your brain that can change the makeup of your precious gray matter. Fortunately, our brains are adaptable, and can be repaired when chronic stress starts to take hold. The best thing to do to fight stress is to know just how to relax and de-stress throughout the day so that your brain can stay happy and healthy. Here are some key ways that researchers have found helps de-stress our brains.

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