Why Alcohol Cravings Happen: The Brain Chemistry Behind Drinking

January 6, 2025

One of the most powerful things that supported me after I quit drinking was understanding the science behind my seeming lack of willpower.

I am sharing this so that you can benefit from knowing that whilst it is your responsibility to make changes, it is not your fault if you struggle to control your drinking.

The Chemical Drivers for Drinking

When I was drinking, I was unaware of the chemical processes driving me to pick up a drink, even when I was determined not to. In the morning, I was resolute. This would be the day I would stop. I felt so sure I was finally ready. But as the day unfolded, thoughts of “start tomorrow” would creep in, and I would feel a sense of relief when I decided that today was not the day. I could push it out just a little longer.

What I did not realise was how much my brain chemistry was working against me. Alcohol does not just impact our behaviour. It rewires the systems that control our thoughts, feelings, and actions.

Dopamine and the Reward System

Alcohol hijacks our brain’s reward system. Drinking floods the brain with dopamine, the chemical responsible for pleasure and reward. Over time, this creates a strong association between alcohol and feeling good, making it harder to resist the urge to drink even when we consciously want to stop.

Regular drinking reduces the brain’s natural ability to produce dopamine, leaving us needing alcohol not just to feel good but to feel normal. This is why giving up alcohol feels so difficult, and why in the first 10 days of quitting, we can feel flat, bored, and frustrated. Our body is used to getting its dopamine from alcohol, and adjusting takes time.

Stress, Cortisol, and the Escape Loop

For me, drinking became a way to manage stress. What I did not realise was that alcohol increases cortisol, the body’s stress hormone. While it provides temporary relief, alcohol ultimately makes me more stressed and anxious. This created a cycle where I drank to escape stress, which made me more stressed and only fuelled the need for another drink.

GABA, Glutamate, and the Relaxation Myth

Alcohol affects the brain’s GABA and glutamate systems, which regulate relaxation and energy. Initially, alcohol amplifies GABA, our natural sedative, and suppresses glutamate, which is responsible for activity, making us feel calm and relaxed.

However, the brain compensates by producing less GABA and more glutamate to counteract alcohol. This imbalance can leave us feeling anxious, restless, or experiencing withdrawal symptoms when we stop drinking.

The good news is that this can all stop. Once we ride a few waves of discomfort we get to experience real relaxation and peace. This too can become healthily addictive.

Cravings Are Not Just Psychological

Our cravings are not just about willpower. They are deeply tied to brain chemistry. Just thinking about drinking can release small amounts of dopamine in anticipation, creating a powerful urge to follow through. This chemical response can feel overwhelming, but understanding it is key to overcoming it.

I used to tell myself, “There is a surge of dopamine in my brain right now. It will subside. I just need to wait it out.”

Over time the urges became less intense and less frequent, and were always followed by another dopamine surge, this time from the reward of overcoming the craving.

Breaking Free from the Cycle

Learning about the chemical drivers behind drinking was a turning point for me. I realised I was not weak or lacking willpower. I was battling powerful biological forces. With this knowledge I began to approach my relationship with alcohol differently.

Quitting drinking was not just about saying no. It was about healing my brain, restoring balance, and finding healthier ways to manage stress and seek pleasure. The process took time, but it was absolutely worth it.

No more cravings. No more frustration. No more regret. No more shame.

If you are struggling, it is easy to blame yourself and feel ashamed. Messages like “drink responsibly” suggest it is about personal control, but they leave out a critical fact. Alcohol is a highly addictive substance. By understanding the science behind cravings, you can let go of shame and focus on healing.

Practical Steps to Help You Through

Here are some steps to help you navigate the transition away from alcohol.

1. Replenish Your Body

Focus on protein to help rebuild your neurotransmitters. Include B vitamins and magnesium for energy and relaxation. Stay hydrated to combat fatigue and cravings.

2. Rewire Your Reward System

Replace alcohol with activities that naturally boost dopamine, like exercise, hobbies, and time with people who support you. Celebrate small wins and reward yourself for not drinking. This genuinely speeds up progress.

3. Manage Stress

Use tools like mindfulness, meditation, or journaling to cope with stress. Seek therapy or coaching for support that is tailored to you.

4. Handle Cravings in the Moment

Try the 10-minute rule. Wait 10 minutes and distract yourself. Reach for herbal tea or an alcohol-free drink instead. The urge will pass.

5. Build a New Routine

Replace old drinking rituals with activities that feel meaningful. Walking, reading, spending time with people you enjoy. Small consistent changes add up quickly.

6. Seek Support

Working with a coach or joining a group of like-minded people can make the process much easier. Shared experiences remind you that you are not alone in this.

If you want to go deeper on the science, the Science of Drinking resource is a good place to start.

Ready to Reset Your Brain Chemistry?

If you are ready to take a real break from alcohol with structure, tools, and support around you, find out more about the 30-Day Power Pause and take the next step at your own pace.

Corporate 30-Day Experience Enquiry

Please complete your details and I will be in touch shortly.

Download Now