Success stress: Why high performers face greater cardiac risk

We often blame heart disease on junk food, smoking, or lack of exercise. And yes, those matter. But there’s another factor that doesn’t get talked about enough, work stress. Long hours, constant deadlines, job insecurity, and the pressure to always be “on” can slowly take a toll on the heart.

A large analysis published in The Lancet looked at more than 600,000 people across Europe, the US, and Australia. It found that people who worked 55 hours or more per week had about a 13% higher risk of developing coronary heart disease compared to those working standard hours. That’s not a small number. Over time, chronic stress raises blood pressure, increases inflammation, and pushes people toward unhealthy coping habits like poor sleep or comfort eating.

Not just this, the World Health Organisation (WHO) has also raised this issue. Long working hours led to 745 000 deaths from stroke and ischemic heart disease in 2016, a 29 per cent increase since 2000, according to the latest estimates by the World Health Organization and the International Labour Organization published in Environment International.

“Some of the most unexpected cardiac emergencies involve people who look, by all outward measures, exceptionally healthy. They are disciplined, driven, and high-functioning, corporate leaders, entrepreneurs, professionals who rarely miss a deadline or a workout. Many do not smoke, do not drink excessively, and have never considered themselves “cardiac patients.” Yet cardiologists acknowledge that this is a group that warrants careful attention,” Dr. Narasa Raju Kavalipati, Sr. Consultant Cardiology and Director, Interventional Cardiology, CARE Hospitals, Banjara Hills, Hyderabad told TOI Health.
High achievement, when paired with certain physiological and behavioural patterns, can quietly push the heart into dangerous territory, the doctor warns and shares the patterns that individuals, young adults mostly, should pay attention to.

People who tend to push themselves hard often don’t realize how long they’ve been living in “on” mode. The deadlines stack up, decisions don’t stop, and there’s a quiet pressure to stay sharp and dependable at all times. Physiologically, the body responds the same way it would to a threat: cortisol and adrenaline circulate more often than they should. When that state becomes routine rather than occasional, it can subtly interfere with normal heart rhythm, blunt healthy blood-pressure fluctuations, and alter how blood vessels respond to stress. These aren’t dramatic changes you feel right away—but over years, they matter.
The heart is remarkably adaptive—but it also requires periods of genuine recovery. When stress becomes continuous and unrelieved, the electrical and muscular stability of the heart can become vulnerable.

Many driven individuals exercise intensely but inconsistently. Long sedentary workdays are “compensated” with sudden bursts of high-intensity workouts. From a cardiac standpoint, this pattern can be risky.
The heart responds best to regular, moderate conditioning. Sudden exertion against a background of fatigue, dehydration, or poor sleep can increase the risk of rhythm disturbances, particularly in individuals with undetected coronary disease.

Sleep is often the first sacrifice in a high-performance lifestyle. Yet sleep deprivation is far from harmless. It increases sympathetic nervous system activity, raises blood pressure, worsens insulin resistance, and promotes inflammation—all of which strain the cardiovascular system.
In clinical practice, it’s not unusual to see people with reassuring cholesterol numbers and no warning symptoms show up with significant cardiac events after months or years of chronic sleep deprivation. The risk doesn’t always announce itself early; it accumulates quietly while sleep is treated as optional.

High-achievers are frequently conditioned to remain composed under pressure. While emotional control carries professional value, chronic emotional suppression may have physiological consequences. Research has demonstrated associations between unexpressed stress, autonomic imbalance, and increased cardiac risk.
The heart responds not only to physical load, but also to emotional strain that remains unresolved.

This group is often more likely to dismiss early symptoms. Mild chest discomfort may be attributed to acidity. Palpitations are written off as anxiety. Fatigue becomes normalised.
The culture of “pushing through” can delay medical evaluation until symptoms become severe or catastrophic.
Sudden cardiac events rarely arise from a single trigger. More often, they represent the cumulative effect of metabolic strain, emotional stress, inflammation, vascular dysfunction, and electrical instability.
High-achievers frequently accumulate this burden silently, while appearing outwardly well and functional.

From a clinical standpoint, heart protection is not about intensity—it is about consistency and recovery:
Regular, sustainable physical activity rather than extremesSleep that is protected, not negotiated
Stress that is acknowledged and processed
Periodic cardiac evaluations, even in the absence of symptoms
The heart does not respond to ambition. It responds to rhythm, balance, and restoration. For those who strive relentlessly, learning when to pause may prove to be the most life-saving discipline of all.