Stress Is More Dangerous Than Most Addictive Drugs

September 7, 2026

John Makohen, Author and Co-Founder, Educational Enhancement CASAC 

Tom O'Connor, Publisher

How Chronic Stress Trains the Brain to Prioritize Immediate Relief

Stress doesn't usually kill you today. It quietly changes your brain, your body, and the decisions you make until you no longer recognize the person you've become.

Most people are afraid of fentanyl. Or heroin. Or cocaine. Very few people are afraid of stress. They should be.

Stress rarely arrives with flashing lights or a dramatic collapse. It doesn't announce itself the way an overdose or heart attack does. It settles into your life quietly. You sleep a little less. You become more impatient. You stop enjoying the things that used to matter. Your body stays tense. Your thoughts become louder. You tell yourself you'll slow down next week.

Then next week becomes next year. By then, your brain has already begun adapting to a world it believes is dangerous. That adaptation changes almost everything.

Stress isn't an emotion. It's a biological state. People often talk about stress as if it's just a feeling. It isn't. Stress is your body's emergency response system.

When your brain believes you're in danger, it releases hormones like cortisol and adrenaline. Your heart beats faster. Your muscles tighten. Your attention narrows. Your body prepares to survive. That response is brilliant for a few minutes.

Our ancestors needed it to escape predators or face immediate threats. The problem is that modern life rarely gives the nervous system permission to switch it off. Work deadlines. Financial pressure. Relationship conflict. Loneliness. Childhood trauma. Constant notifications.

The brain doesn't care where the threat comes from. It asks one question: Am I safe?

Am I Safe?

If the answer keeps coming back "no," the stress response stays on. Not for minutes. For months. Sometimes years. Your brain was never designed to stay stressed.

The brain changes to match the environment it expects. If your environment feels unpredictable, your brain becomes better at detecting danger. That's useful when danger is real. It becomes exhausting when the danger never leaves.

Research on allostatic load by neuroscientist Bruce McEwen has shown that chronic stress causes wear and tear throughout the brain and body. Systems designed for short bursts of survival begin operating around the clock.

The cost accumulates. Sleep becomes lighter. Memory becomes less reliable. Blood pressure rises. Inflammation increases. The immune system changes.

Your body isn't failing. It's adapting to the conditions it believes it must survive. That adaptation becomes the problem. Stress quietly changes your decisions. People often believe decisions come from logic. They don't. They come from whatever state your brain is operating in. A rested brain makes different choices than an exhausted one. A regulated nervous system makes different choices than an overwhelmed one. Chronic stress weakens the prefrontal cortex, the part of the brain responsible for planning, judgment, impulse control, and delaying gratification. At the same time, it increases activity in brain regions that detect threats.

The result isn't stupidity. It's urgency. Immediate relief begins feeling more valuable than future rewards. That explains why people snap at loved ones. Overspend money. Skip exercise. Stay awake too late. Reach for another drink. Open another app. Order food they weren't hungry for.

The decision didn't come out of nowhere. The brain was trying to reduce discomfort as quickly as possible. I explored this idea further in "Why Smart People Make Terrible Decisions During Addiction," where I explain how stress changes the machinery behind decision-making long before behavior changes.

Why Relief Becomes Addictive

Here's something most people never think about. The brain doesn't become addicted to substances because they're illegal. It becomes attached to whatever reliably reduces distress. Alcohol. Nicotine. Cannabis. Food. Shopping. Scrolling. Gambling. Compulsive work. Each offers the same promise. Relief.

That's why stress is such powerful fuel for addiction. It teaches the brain that certain behaviors solve immediate problems. The relief may last minutes. The lesson lasts much longer.

Every repetition strengthens the association. "This works." "Remember this." "Do it again." That's how habits form. Not because people lack discipline. Because the brain is constantly learning what appears to reduce suffering.

Stress and Addiction Become Partners

People often imagine stress causing addiction. The relationship is more complicated. Stress increases substance use. Substance use increases stress. The cycle feeds itself.

Neuroscientist George Koob's work on the brain's stress systems describes how repeated substance use gradually shifts people away from chasing pleasure and toward escaping discomfort. The reward system becomes less responsive. The stress system becomes more active.

Eventually, people aren't using substances to feel good. They're using them to feel less bad.

The National Institute on Alcohol Abuse and Alcoholism's overview of the brain in addiction and recovery explains this shift in remarkable detail. It changes how we understand relapse.

Many relapses don't happen because someone suddenly wanted to get high. They happen because the nervous system became overwhelmed. The brain reached for the fastest relief it knew. That's a very different story.

Recovery is teaching the nervous system safety again. People often think recovery begins with stopping substances. That's part of it.

Recovery also means teaching the brain that danger isn't everywhere anymore. That lesson comes through repetition. Sleeping enough, walking outside, calling a friend, going to therapy, eating regularly, moving your body, and keeping promises to yourself.

None of those activities create dramatic breakthroughs. Together, they retrain the nervous system. The brain slowly stops expecting an emergency. It begins expecting stability.

Recovery isn't one life-changing decision. It's hundreds of ordinary decisions repeated until they become the brain's new normal. The danger isn't stress. It's living there.

Stress isn't the enemy. You'll never eliminate it. You shouldn't try. Stress helps you survive.

The real danger begins when your nervous system forgets how to come back down, when vigilance becomes your baseline, when exhaustion becomes your personality, when relief becomes more valuable than health.

That's when chronic stress quietly starts rewriting your life. People spend enormous energy avoiding dangerous drugs. Far fewer spend that same energy reducing chronic stress.

The irony is that one often leads to the other. Your brain doesn't need a perfect life. It needs evidence that it is safe enough to stop fighting at all times. That may be one of the most important forms of recovery there is.

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