Is the inability to stop drinking because you love alcohol genetic?

The essence of alcohol dependence and self-control as seen through the experience of GLP-1 receptor agonists (Wegovy) and biological mechanisms

An Seungwon
Wonbrand (https://wonbrand.co.kr)
August 13, 2026

The racing heart the moment you open the door to a pub on your way home from work, or that ice-cold beer you crave intensely when stress reaches its peak. Everyone has had the experience of smiling bitterly and wondering, "Am I a natural-born drinker?" However, are the "desire to drink" and the "inability to stop" truly the result of a destiny determined by genes?

In conclusion, a single "alcohol-loving gene" does not determine everything. According to research in biology and psychiatry, human drinking behavior is a biological product where three axes—"innate brain," "innate body," and "acquired self-control"—are intricately intertwined [1].

1. The first axis: The pleasure-seeking brain (heritability approx. 50%)

The reward circuit in our brain that connects the Nucleus Accumbens and the Ventral Tegmental Area (VTA) releases dopamine when stimulated. Twin studies and other research have shown that about 50% of the sensitivity of this reward system is inherited [2]. In other words, you have inherited from your parents the very tendency to instinctively seek stimulation and pleasure.

"Why is it that I don't feel drawn to sweets, shopping, or gambling, but I feel such a strong desire for alcohol?"

The reason lies in the "substance-specific switch" that activates the brain's reward system "substance-specific switch" . The objects that fascinate the brain differ from person to person, and it is highly likely that for certain individuals, the mechanism is set to be triggered most powerfully when "alcohol" enters the body. Furthermore, alcohol acts on GABA receptors, which are inhibitory neurotransmitters, and has a unique pharmacological effect of instantly relieving stress and relaxing the brain [3]. You have genetically inherited a strong reactivity to alcohol, which heals the brain.

2. The second axis: The physical constitution that accepts alcohol (heritability approx. 100%)

How your body reacts when you drink alcohol is almost 100% determined by genetics. About 30-50% of East Asians have a "genetic brake" called the ALDH2 enzyme mutation (ALDH2*2), which causes acetaldehyde to accumulate in the body even with small amounts of alcohol, leading to facial flushing or nausea [4].

Here, a powerful interaction between the first and second axes is born.

• Combination of the 1st and 2nd axes (runaway accelerator): If the brain feels strong pleasure from alcohol (strong 1st axis) and the body does not show a strong rejection of alcohol (no 2nd axis brake), the desire to drink is amplified to a point where it is extremely difficult to control.

• When the 1st axis is strong but blocked by the 2nd axis (suppression of desire): No matter how much the brain seeks the pleasure of alcohol (strong 1st axis), if the body's genetic brake works and you feel sick (2nd axis brake activated), drinking behavior itself is physically suppressed due to biological limitations.

3. The third axis: Behavioral self-control and functional decline (heritability approx. 0%)

So, when the 1st and 2nd axes combine to press a powerful accelerator, is the "lack of self-control" that prevents you from stopping also due to genetics?

The control ability and habits of the "brake" known as the Prefrontal Cortex, which governs reason, depend more on acquired learning, environment, and stress-coping methods than on genetics. Nevertheless, the primary reason it is difficult to control is that the accelerator created by the 1st and 2nd axes is too strong, causing the brake of reason to be overpowered. The second reason is that the moment alcohol enters the body, the function of the prefrontal cortex itself is pharmacologically paralyzed, dulling judgment [3].

💡 My personal experience: What happened when I took Wegovy and stopped

I have experienced the mechanism of these three axes directly with my own body.

This experience of mine is perfectly consistent with the alcohol desire suppression mechanism of GLP-1 receptor agonists, which has been actively researched in academia in recent years [5].

• While on Wegovy: Semaglutide, a GLP-1 receptor agonist, acts on the nucleus accumbens and VTA regions of the brain, physically blocking the dopamine release caused by alcohol [5][6]. Because the medication biologically suppressed the power of my innate accelerator my rational brake (the third axis) was easily able to take control, making it possible to cut back on drinking.

• After stopping Wegovy: Once the blocking effect of the medication wore off, my innate brain reward system (the first axis) began to react strongly to alcohol again, and the accelerator started running wild at full throttle. As the accelerator became strong again and alcohol consumption also lowered the function of the prefrontal cortex, the brake (the third axis) stopped working, and self-control became extremely difficult once more.

❓ So, is it impossible to quit forever without Wegovy?

When you experience the loss of control after stopping the medication, a terrifying thought suddenly arises: "Is it impossible for me to control my drinking for the rest of my life without a drug like Wegovy?"

The real problem lies in the fact that even before you start drinking, you experience "an intense craving to drink alcohol." This is a state where the brain's craving switch, which Wegovy had been suppressing, has been flipped back on. In this state, advice like "try to resist alcohol" or "avoid drinking parties" feels as meaningless as telling someone suffering from hunger to resist the food in front of them.

However, you don't have to give up just because you don't have the medication. Instead of a drug that physically suppresses desire, you can adjust the accelerator with an "emergency strategy to rewire your brain the moment a craving hits."

1. Change your route during prime time: Desires do not remain at the same intensity all day long. Identify the specific times and routes when your brain hits the accelerator, demanding "give me dopamine," such as when leaving work or at 7 or 8 PM when things settle down, and avoid those behavioral patterns themselves.

2. The "15-minute delay rule" to ride out the wave of craving: Neuroscientifically, a craving for alcohol is a temporary spike in neurotransmitters that peaks and subsides in about 15 to 20 minutes [7]. Set a 15-minute timer and walk before entering a convenience store, or drink a glass of cold carbonated water to wait for the brain's wave of craving to pass.

3. Emergency brain treatment through alternative stimulation: This is a method of temporarily diverting the attention of a dopamine-deprived brain by providing strong sensory stimulation to the body, such as 0.0% non-alcoholic beer, spicy food, or washing your face with cold water.

Wegovy showed us the valuable biological success experience that "if you can just adjust the brain's accelerator, you are a person who is fully capable of control." Now that the medication is gone, this is merely a training phase to control that accelerator with the steering wheel of habits and emergency strategies instead of injections.

Genetics may have given you a high-performance sports car with a "brain sensitive to alcohol" and a "body that accepts alcohol." It might feel difficult at first to take the wheel again without the help of medication and control the surging desires. However, if you understand the principles of your brain's reactions and design an environment that eases the accelerator before you drink, the brakes will always perform their intended role. The moment you understand the mechanism—the boundary line where genetics ends and acquired effort begins—the amount of alcohol you choose to drink tonight should change as well.

References

1. Goldman, D., Oroszi, G., & Ducci, F. (2005). The genetics of addiction: uncovering the genes. Nature Reviews Genetics, 6(7), 521-532.

2. Verhulst, B., Neale, M. C., & Kendler, K. S. (2015). The heritability of alcohol use disorders: a meta-analysis of twin and adoption studies. Psychological Medicine, 45(5), 1061-1072.

3. Koob, G. F., & Volkow, N. D. (2016). Neurobiology of addiction: a neurocircuitry analysis. The Lancet Psychiatry, 3(8), 760-773.

4. Wall, T. L., Luczak, S. E., & Hiller-Sturmhöfel, S. (2016). Biology, genetics, and environment: underlying factors in alcohol use disorder. Alcohol Research: Current Reviews, 38(1), 59-68.

5. Jerlhag, E. (2023). GLP-1 receptor agonists for the treatment of alcohol use disorder: Preclinical and clinical evidence. Neuropharmacology, 223, 109322.

6. Klausen, M. K., et al. (2022). The GLP-1 receptor agonist semaglutide reduces alcohol intake and operant responding for alcohol in rats. EBioMedicine, 76, 103830.

7. Marlatt, G. A., & Donovan, D. M. (Eds.). (2005). Relapse prevention: Maintenance strategies in the treatment of addictive behaviors. Guilford Press. (Urge Surfing Mechanism).

An Seungwon / Wonbrand / https://wonbrand.co.kr