Suppressing your emotions raises your stress hormones, strains your relationships, and over time increases your risk of serious illness. A 12-year follow-up study found that people who habitually suppressed their emotions had a 35% higher risk of dying from any cause compared to those who didn’t. The effects aren’t just long-term, either. Even in the short term, pushing down what you feel takes a measurable toll on your body, your thinking, and the people around you.
Your Body Treats Suppression as a Stressor
When you actively hold back an emotional response, your body doesn’t simply go neutral. It ramps up. A large quantitative review published in Health Psychology Review found that people instructed to suppress their emotions during stressful tasks showed significantly higher heart rate, blood pressure, and cortisol levels compared to people who were allowed to respond naturally. The blood pressure effect was especially pronounced, with suppression producing a moderate but consistent spike across studies.
This matters because cortisol, the hormone your body releases during stress, doesn’t just make you feel tense in the moment. Chronically elevated cortisol has been linked to the progression of arterial calcification, sustained high blood pressure, and other precursors to heart disease. People who described themselves as habitual suppressors, not just those told to suppress in a lab, also showed elevated cortisol responses to stress across 11 separate studies. In other words, the more suppression becomes your default, the more your body stays in a heightened state of physiological alarm.
Suppressed Feelings Come Back Stronger
One of the most counterintuitive findings in psychology is that trying not to feel something often makes you feel it more. The classic demonstration of this is the “white bear” experiment: participants told not to think of a white bear ended up thinking about it more frequently than those given no such instruction. The same principle applies to emotions. When you try to push away sadness or anger, a background monitoring process in your brain stays on alert for the very feeling you’re trying to avoid. That vigilance keeps pulling the emotion back into awareness.
This creates a frustrating cycle. You suppress, the emotion returns with force, and you suppress harder. The mental effort required to maintain suppression drains cognitive resources that could go toward actually processing the experience or solving the problem that triggered the emotion in the first place.
It Drains Your Working Memory
Suppressing emotions is not a passive act. It requires active, ongoing effort that competes with other mental tasks. Research shows that people who conceal their emotional expressions while taking in new information remember less of what they saw and heard. The mechanism works something like this: suppression shifts your attention inward, toward monitoring your own facial expressions and behavior, and away from whatever is actually happening around you. That poor encoding leads directly to worse memory.
In controlled experiments, people instructed to hide their emotions recalled fewer details from a presentation compared to those given no suppression instructions, both immediately afterward and on delayed tests. This has practical consequences. If you’re suppressing frustration during a meeting or anxiety during a conversation, you’re likely absorbing less of the actual content. Over time, this can create the impression that you’re disengaged or inattentive, when in reality your mental bandwidth is being consumed by the effort of holding yourself together.
It Fuels Depression and Anxiety
The relationship between emotional suppression and mental health problems runs in both directions, and that’s what makes it so difficult to escape. A longitudinal study of a nationally representative adult sample, published through the American Psychological Association, found that greater use of emotional suppression predicted higher levels of depression and anxiety at later time points. But the reverse was equally true: people experiencing more depression and anxiety were more likely to start suppressing their emotions.
This bidirectional cycle means suppression isn’t just a symptom of feeling bad. It actively makes things worse. Each pass through the loop reinforces the other direction. You feel anxious, so you clamp down on your emotions. Clamping down increases your anxiety, so you suppress even more. Unlike cognitive reappraisal, which involves reframing how you think about a situation, suppression showed a robust and consistent link to worse mental health outcomes across multiple waves of data collection.
Your Relationships Suffer Too
Emotions serve a social function. They signal to the people around you what you need, what you value, and how you’re experiencing a shared moment. When you suppress those signals, the people closest to you lose access to that information. Research on romantic couples found that when one partner suppressed their emotions during conversations, both partners reported feeling less close and less understood. This wasn’t limited to high-stakes arguments. Suppression was associated with lower perceived responsiveness and closeness even during low-risk, everyday interactions.
The damage is subtle but cumulative. A partner who can’t read your emotional state has to guess what you’re feeling, and they often guess wrong. Over time, this creates distance. The suppressor may feel misunderstood, while the partner feels shut out. Neither person is doing anything deliberately harmful, but the habit of hiding emotions erodes the sense of being truly known by someone.
The Physical Symptoms That Follow
When emotions aren’t processed psychologically, they often surface physically. This phenomenon is well documented in people with depression, but it applies more broadly to anyone who habitually bottles things up. Common complaints include persistent headaches described as a band of pressure around the head, tightness or heaviness in the chest, digestive problems like nausea or loss of appetite, disrupted sleep, muscle tension, dizziness, and unexplained aches and pains throughout the body. In one U.S. study of people with major depression, two-thirds reported general aches and pains as a prominent symptom.
These aren’t imagined symptoms. The sustained physiological arousal that comes with suppression, the elevated cortisol, the increased blood pressure, the cardiovascular strain, creates real physical consequences. Many people visit doctors repeatedly for these complaints without connecting them to how they handle their emotions.
Suppression at Work Drives Burnout
Many jobs require you to project calm, friendliness, or composure regardless of how you actually feel. This is sometimes called emotional labor, and it carries a real cost. Research reviews consistently find that faking or suppressing genuine emotions at work is linked to emotional exhaustion, depersonalization, and full-blown burnout. The effect is strongest when there’s a gap between what you feel and what you display, a state known as emotional dissonance.
Over time, this kind of sustained suppression leads to absenteeism, higher turnover, and reduced job performance. People don’t just feel tired. They begin to feel hollow, disconnected from their own reactions, going through the motions without the internal resources to engage meaningfully. Jobs that demand constant emotional performance, healthcare, customer service, teaching, carry especially high risk.
The Long-Term Mortality Data
Perhaps the most striking evidence comes from a 12-year mortality study. People scoring at the 75th percentile for emotional suppression, compared to those at the 25th percentile, had a 35% higher risk of death from any cause. For cancer specifically, the risk jumped to 70% higher, corresponding to roughly a 5.6-year difference in life expectancy. When researchers excluded deaths in the first year (to rule out people who were already severely ill), the associations actually grew stronger: the cancer mortality risk more than doubled.
The cardiovascular mortality risk was elevated as well, though it didn’t reach statistical significance in this particular study. Still, combined with the blood pressure and cortisol data from experimental research, the pattern is consistent. Chronic suppression keeps the body in a state of low-grade physiological stress that, over decades, contributes to the diseases most likely to kill you.
What Works Better Than Suppression
The most studied alternative is cognitive reappraisal: changing how you think about a situation before the emotional response fully takes hold. If suppression is like clamping a lid on a boiling pot, reappraisal is like turning down the heat. Because it intervenes earlier in the emotional process, it can actually reduce the subjective experience of negative emotion rather than just hiding its outward expression. Suppression, by contrast, only masks the behavioral output while the internal experience continues to simmer and accumulate.
Reappraisal also avoids the cognitive costs of suppression. Because you’re not devoting mental resources to monitoring and controlling your expressions, you stay more present in conversations and perform better on memory tasks. Socially, you come across as more engaged and responsive, which strengthens rather than undermines your connections with others. The practical shift is straightforward: instead of telling yourself “don’t feel this,” you ask “what’s another way to see this situation?” It doesn’t work perfectly every time, but it avoids the cascade of costs that suppression sets in motion.