There is a familiar scene in almost every breakup story. The texts stop, the apartment feels too quiet, and someone pours a second glass of wine, then a third, because the evening has to be filled with something. In movies it is played for sympathy or a laugh. In real life it can be the start of a habit that outlasts the heartbreak itself.
Researchers have spent years asking why relationship loss and drinking seem to travel together, and the answers say a lot about how much our partners shape our daily lives. In June 2025, the World Health Organization’s Commission on Social Connection reported that 1 in 6 people worldwide is affected by loneliness, and that people who are lonely are twice as likely to become depressed. A breakup is one of the fastest ways to go from connected to alone.
None of this means every glass after a split is a warning sign. Grief is normal, and so is wanting comfort. But it helps to understand what the research shows, how to tell a rough few weeks from a habit that is settling in, and when drinking calls for luxury substance abuse treatment or another form of professional care rather than simply waiting for time to do its work.
What the Largest Study on Divorce and Drinking Found
The clearest evidence comes from divorce, the most formally recorded kind of breakup. In 2017, the American Journal of Psychiatry published a study led by Kenneth S. Kendler of Virginia Commonwealth University, working with colleagues at Lund University in Sweden. The team followed 942,366 married people in Sweden who had no history of alcohol use disorder before marriage, identifying new cases through medical, criminal and pharmacy registries.
The results were striking. After divorce, the risk of a first diagnosis of alcohol use disorder rose about sixfold in men and more than sevenfold in women, with reported hazard ratios of 5.98 and 7.29. The researchers also looked at identical twins in which one twin divorced and the other did not, a design meant to separate the effect of divorce from shared genes and upbringing. The link weakened but did not disappear, with hazard ratios of 3.45 in men and 3.62 in women.
Two other findings stand out. Losing a spouse to death was also tied to higher risk, and among divorced people, remarrying was associated with a large drop in risk. The authors concluded that spousal loss, through divorce or bereavement, is associated with a large and lasting increase in risk, likely reflecting both causal and noncausal processes.
It is worth being clear about the limits. This was a study of married couples in one country, and it did not track shorter relationships or dating breakups. Still, it is the kind of large, careful dataset that makes the pattern hard to dismiss.
Why Losing a Partner Can Change How Someone Drinks
Kendler’s own explanation was not mainly about stress. Speaking about the study, he said, “Married partners tend to look out for each other and reduce dangerous behaviors like smoking and drinking,” and described the increased risk as “the loss of the protective elements of marriage.” In other words, a partner is often the person who notices the third glass, suggests going to bed, or asks whether everything is okay. When that person leaves, so does a quiet layer of accountability.
The study’s authors added a telling detail, reported by Psychiatric News: divorce had a much larger effect on risk when the spouse did not have a history of alcohol use disorder. A spouse without an alcohol problem, they suggested, is likely to be much more effective at that kind of protective control.
The Role of Loneliness and Low Mood
Emotion plays a part too. A 2014 study in Clinical Psychological Science by Kasey Creswell and colleagues found that teenagers who drank alone were more likely to drink in situations involving unpleasant emotions and conflict with others, a pattern the authors read as consistent with using alcohol to manage negative feelings. Combine that with the WHO’s finding that lonely people are twice as likely to become depressed, and the post-breakup evening on the couch starts to look less like a cliche and more like a risk worth taking seriously.
Signs the Post-Breakup Glass Is Becoming a Pattern
MedlinePlus, the consumer health service of the US National Library of Medicine, notes that a drinking problem is judged by how alcohol affects a person’s life, not simply by how much or how often they drink. The National Institute on Alcohol Abuse and Alcoholism (NIAAA) lists the questions doctors use to assess alcohol use disorder. Several of them map closely onto life after a breakup:
- Drinking more than planned: Ending up drinking more, or for longer, than intended is the first symptom on NIAAA’s list, and it is easy to miss when evenings have no shape.
- Trying and failing to cut back: Wanting to stop or cut down more than once without managing it is another of the symptoms NIAAA describes.
- Dropping things that used to matter: Giving up activities that were important or enjoyable in order to drink can be a sign that alcohol is filling the space the relationship left.
- Drinking through low mood: Continuing to drink even when it makes you feel more depressed or anxious is specifically included in NIAAA’s checklist.
- Needing more for the same effect: Having to drink much more than before to feel the effect points to growing tolerance.
According to NIAAA, health care professionals diagnose alcohol use disorder when someone has two or more of these symptoms in the past year, with two to three considered mild and six or more severe. The institute also notes that any of these symptoms may be cause for concern, and that the more symptoms there are, the more urgent the need for change.
Filling the Space Without a Glass
If the research shows anything, it is that connection protects. The Swedish data linked remarriage with a lower risk, which is not advice to rush into a new relationship, but a hint that the people around us matter. The WHO commission suggests everyday steps that apply just as well after a breakup: reaching out to a friend, putting the phone away during conversations, joining a local group or volunteering.
It can also help to give someone else permission to play the role a partner used to play. A friend who knows you are having a hard time can notice changes you might not. MedlinePlus advises that people concerned about someone’s drinking should not wait to bring it up, and that a primary care provider is a sensible first stop for help.
Heartbreak is painful, but it is not a diagnosis. Paying attention to what happens in the glass, and not just in the heart, is one of the kinder things you can do for yourself in the months that follow.
Frequently Asked Questions (FAQs)
1. Does the divorce research apply to people who were dating, not married?
Not directly. The 2017 Swedish study by Kendler and colleagues only included married people, so it cannot say how much risk rises after a shorter relationship ends. What it does show is that losing a close partner is linked to higher risk, which is a reasonable prompt for anyone to watch their drinking after a breakup.
2. Are women more affected than men after a split?
In the Swedish data, the reported risk after divorce was somewhat higher for women, with a hazard ratio of 7.29 compared with 5.98 for men. Both increases were large, so the finding is less about one group being safe and more about everyone paying attention.
3. How many symptoms suggest a drinking problem after a breakup?
According to NIAAA, health care professionals diagnose alcohol use disorder when a person has at least two of the listed symptoms within the past year. NIAAA also notes that any of these symptoms may be cause for concern, so it is worth talking to a health care professional early rather than waiting to see whether things improve.