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How Stress and Sugar Affect Your Brain

author avatar Dr. Eric Berg 07/28/2024

We all experience stress at some point in our lives. But did you know that chronic stress can significantly impact brain function? This isn't about the occasional bad day; it's about the constant pressure many people face.

This pressure can lead to many health problems. This post will discuss how chronic stress affects your short-term memory and focus through hormones like cortisol and insulin.

How Stress Impacts Your Brain

You're probably familiar with the immediate effects of stress: a racing heart, sweaty palms, and maybe even dizziness. This reaction is your body's "fight or flight" response kicking in.

This response releases a surge of hormones, including cortisol, to help you deal with the perceived threat.

This stress response is crucial for survival in genuinely dangerous situations. However, our bodies weren't designed to handle chronic stress.

Prolonged periods of pressure—whether from a demanding job, financial worries, or personal issues—can negatively affect our bodies, especially our brains. Chronic stress can lead to long-term brain changes.

The Cortisol Connection: Stress and Brain Function

Cortisol is often referred to as the “stress hormone” for a reason. Our adrenal glands release cortisol when we experience stress.

This release helps mobilize energy stores, diverts blood flow to muscles, and prepares the body to respond to danger, which could even be a car accident.

However, when cortisol levels remain elevated for long periods, they can interfere with the brain's ability to function optimally. High levels of cortisol for too long can impact brain functions like emotional processing.

Think of it like running your car engine on high RPMs for too long—eventually, something will give.

Human brain illustration

Brain Fog, Memory Lapses, and More: The Role of Insulin

Here's where things get more complicated. Chronic stress doesn't just increase cortisol levels; it also affects how your body regulates blood sugar through insulin. Elevated cortisol can lead to higher insulin levels, known as insulin resistance.

Insulin resistance prevents glucose from entering your brain cells efficiently. Considering that glucose is the primary fuel for your brain,

it's easy to see how this could cause problems with many brain functions, as well as put you at increased risk for other health problems like heart disease, high blood pressure, and even stroke.

What happens when your brain can’t access the energy it needs? You might experience:

  • Brain fog.

  • Difficulty concentrating.

  • Memory problems.

  • Mood swings.

Over time, this constant state of energy deprivation may even increase the risk of more serious cognitive decline, such as dementia. Stress appears to impact the prefrontal cortex area of the brain.

The prefrontal cortex is the command center of your brain. When a stressful event occurs, it's like your brain sends a distress signal out, putting your body into that fight-or-flight mode we talked about.

Man with a headache

Reducing Stress, Protecting Your Brain

Now for the good news: you're not powerless against stress. Taking proactive steps to manage stress levels can help protect your brain and maintain cognitive function as you age. Your childhood experiences and stress levels can also impact your stress response.

Lifestyle Changes to Improve Stress and Brain Function

Here are some scientifically-backed strategies to help manage stress and stress activity:

  • Regular Exercise: Physical activity doesn’t just benefit your body; it helps your brain too. Regular exercise—even a brisk walk—can help lower stress hormones like cortisol, improve sleep, and boost your mood.

  • Prioritize Sleep: Aim for seven to eight hours of quality sleep every night. Sleep allows your brain to recharge and consolidate memories.

  • Mindfulness and Meditation: Incorporating practices like mindfulness meditation can help calm the mind, reduce stress hormones, and improve focus. Many free guided meditations are available online or through mobile apps.

  • Healthy Diet: Focus on consuming whole, unprocessed foods, such as fruits, vegetables, lean proteins, and healthy fats. A proper diet can help stabilize blood sugar levels, reducing stress on the brain and minimizing the damaging effects of stress.

Additional Support

If you’re struggling to manage stress on your own, don’t hesitate to seek professional help. A therapist can provide personalized coping mechanisms and stress-reduction techniques.

Remember, prioritizing your mental health is essential for your overall well-being, including maintaining optimal brain function.

Brain Strain

Chronic stress leads to the release of stress hormones like cortisol, which, over time, can impair cognitive functions such as memory, focus, and decision-making. It can also contribute to mental health issues like anxiety and depression.

To counteract these effects, it's essential to adopt stress management techniques and consider beneficial supplements. But what is creatine? Creatine is a naturally occurring compound that plays a crucial role in cellular energy production.

While commonly associated with muscle performance, creatine has also shown promise in supporting brain health by enhancing energy availability to brain cells, potentially improving cognitive function and reducing mental fatigue.

By understanding and addressing the impact of chronic stress and incorporating supplements like creatine, individuals can better protect their brain health and overall well-being.

Conclusion

While we often associate stress with mental and emotional strain, it’s important to remember that its effects extend far beyond that. Chronic stress and brain function are intricately linked. Not all stress is created equal.

The impact of chronic stress on hormonal balance—especially cortisol and insulin—can have profound consequences for cognitive health.

This impact can range from brain fog and memory problems to potentially increasing the risk of more serious issues down the line. Prolonged stress can lead to more serious issues, even impacting neural pathways in the brain.

The good news is that by adopting healthy lifestyle habits and seeking professional support when needed, you can take control of your stress levels and protect your brain health. Reducing your stress levels can have positive long-term effects on your brain and body.


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