Black coffee lovers may show darker personality traits, according to a surprising study. Researchers found a link between enjoying bitter tastes and traits like everyday sadism or psychopathy. But what does that really mean?
If you like black coffee, you may think it’s just about health or simplicity. Maybe you enjoy the bold, unfiltered taste. But according to new research from the University of Innsbruck in Austria, your preference might say something deeper about your personality, something most people wouldn’t expect.
The researchers suggest there may be a connection between a love for bitter tastes and darker personality traits. That includes behaviors related to narcissism, sadism, and psychopathy.
This research involved 953 adults in the United States. The participants shared their preferences when it came to taste, sweet, sour, salty, and bitter. After that, they completed personality tests measuring things like narcissism, aggression, psychopathy, sadism, and other antisocial behaviors.
When the results were analyzed, one pattern stood out clearly. People who enjoyed bitter tastes more than others were also more likely to show signs of what psychologists call “malevolent personality traits.”
So, how does liking bitter flavors connect to darker behavior? Researchers found that a stronger preference for bitter foods, like black coffee, dark chocolate, or even gin and tonics, was linked to a higher presence of sadistic or psychopathic traits.
Both rounds of the study confirmed this link. According to the published abstract, there was a clear connection between a taste for bitterness and a stronger tendency toward cruelty or emotional detachment. The most consistent association was with “everyday sadism.”
Every day, sadism isn’t about committing crimes or hurting people on purpose. It’s a psychological term that refers to people who find some level of pleasure in cruelty, even when it’s not real.
For example, someone with this trait might enjoy violent films, graphic video games, or stories about torture. They may not cause harm in real life, but they feel curious or entertained by situations that involve suffering or violence.
Psychopathy is different from everyday sadism, though the two often overlap. According to the National Library of Medicine, psychopathy includes traits like:
- Low empathy
- Shallow emotions
- Impulsive decisions
- A tendency for antisocial behavior
Psychopaths often don’t feel guilt or fear the way others do. They might come across as charming at first, but they often use others for personal gain.
The study found that people who enjoy black coffee may have a higher chance of displaying these traits. That doesn’t mean everyone who drinks black coffee is a psychopath, but it might suggest a certain emotional detachment or darker edge to their personality.
It’s not just black coffee that researchers looked at. The study also included foods and drinks like:
- Dark chocolate
- Radishes
- Tonic water
- Strong alcoholic drinks like gin or whiskey
The common thread? Bitterness.
Liking these intense, sometimes unpleasant flavors may reflect a personality that’s more comfortable with discomfort, or even attracted to it.
Not really. The study isn’t saying that drinking black coffee means you’re dangerous or harmful. Instead, it’s suggesting that there might be personality trends tied to taste preferences.
Think of it more as a personality mirror, not a diagnosis.
Also, the researchers explained that people’s food preferences are shaped by more than just taste. Sometimes we eat or drink things because we’ve learned to like them. Cultural habits, social situations, or past experiences can all play a role in what we choose to consume.

Plenty of people don’t enjoy their first sip of coffee. The same goes for wine, beer, or chili peppers. But over time, they grow to love it. That’s called taste adaptation.
People may also avoid certain foods not because they dislike them, but because they are expensive, bad for health, or hard to get. So, taste preference doesn’t always mean regular consumption.
This is important to keep in mind when interpreting the study. Liking something and eating it are often not the same.
The team behind the study wanted to see how our sense of taste might reflect our inner traits. They found that people with a stronger preference for bitter flavors were more likely to show traits linked to cruelty or emotional distance.
That said, the researchers admitted that personality is complex. No one trait or food can define a person. This was just one part of a bigger puzzle.
And because the study had a large sample size, it offered a fairly broad look at American adults, but it’s not a global conclusion or final word.
So, what does this all mean for your morning brew?
If you enjoy black coffee, it might be a sign of a bold and unapologetic personality. Maybe you have a taste for intensity or simplicity. Or, according to this study, maybe there’s a part of you that leans toward emotional detachment, fascination with darker themes, or even a tiny spark of everyday sadism.
But don’t panic. Loving black coffee doesn’t make you a villain. It just makes you… human. Complex, interesting, and full of surprises.