Most people know that prevention is important. Regular check-ups, a healthy diet, and physical activity are widely recognized as key pillars of long-term health. Yet many people do not act accordingly. Preventive screenings are postponed, risks are underestimated, or symptoms are ignored.
Only 12% of people in Austria regularly make use of free preventive check-ups — even though up to 50% of cancer-related deaths could be avoided through regular screenings.¹ The reasons for this lie less in a lack of knowledge and more in how our brains make decisions. Research in psychology and behavioral economics shows that our behavior often follows different rules than our rational beliefs.
Why knowledge alone does not lead to prevention
Studies show a clear gap between what people know and how they actually behave. Analyses of health screening behavior reveal that even when people are aware of the benefits, many still do not participate in preventive measures. What matters are not just facts, but also factors such as motivation, perceived risk, and personal attitudes.² Other studies confirm that health behavior is strongly influenced by subjective factors — including perceived control, social norms, and personal beliefs.³
In short: knowing what is healthy does not automatically lead to acting accordingly.
Present bias: short-term rewards outweigh long-term health
One of the key mechanisms behind postponing prevention is present bias — a cognitive bias where people prioritize immediate rewards over long-term outcomes. Unhealthy habits often provide instant gratification, while preventive check-ups offer no immediate benefit. Health risks feel distant and abstract. Studies show that this effect is a major barrier to preventive behavior.⁴
The challenge: the benefits of prevention lie in the future — while the effort is felt in the present.
Optimism bias: why we underestimate health risks
Another important factor is optimism bias — the tendency to believe that we are less at risk than others. Research shows that especially healthy individuals tend to underestimate their personal risk, which reduces the likelihood of engaging in preventive actions.⁵
As a result, warning signs may be ignored and prevention is perceived as less necessary.
Information avoidance: why we ignore uncomfortable facts
People tend to avoid information that might be unpleasant or emotionally challenging. Research shows that this behavior is directly linked to riskier health decisions.⁶
Typical examples include:
Psychologically, this can be explained by cognitive dissonance: uncomfortable information would require behavior change — so it is avoided.
Prevention often starts only when symptoms appear
These psychological mechanisms lead to a common pattern: prevention becomes relevant only once symptoms are already present. However, many studies show that preventive measures are most effective before symptoms develop.
Prevention begins with understanding your own body
A key step is gaining a clearer understanding of your own health. This can help make individual risk factors visible and reduce uncertainty.
This can help to:
assess risks more realistically
increase motivation for change
make more informed decisions
This approach aligns with current developments in healthcare, where prevention, personalization, and early diagnostics are becoming increasingly important.
A simple first step can be at-home health tests like those offered by MavieMe, which help you better understand key health markers and interpret your results.
Why prevention often fails — and what can help
Most people know what is healthy — yet often act differently. Not out of neglect, but because our brains prioritize short-term rewards, underestimate risks, and tend to avoid uncomfortable truths.
The good news: these mechanisms are not personal failures. They are human — and that means they can be addressed consciously.
Prevention does not need to be perfect. It does not start with radical change, but with small, clear steps.
