There is a common belief that heart disease is simply the result of poor diet, inactivity, or obesity. While these are important contributors, cardiovascular disease is far more complex. In clinical practice, it is not uncommon to encounter individuals who maintain disciplined lifestyles, normal body weight, and seemingly ideal laboratory values yet still develop significant coronary artery disease.
Atherosclerosis develops gradually and often silently over decades. The absence of symptoms does not equate to the absence of disease. Many heart attacks arise from plaques that were not previously causing severe obstruction. Research published in Circulation highlights that plaque instability and inflammation, rather than degree of narrowing alone, often trigger acute events (Libby et al., 2012).
Routine investigations such as electrocardiograms, lipid profiles, and treadmill stress tests are important screening tools. However, stress testing typically detects flow-limiting blockages and may miss early plaque formation or non-obstructive atherosclerosis. For this reason, relying solely on standard testing can provide false reassurance in selected individuals.
Atherosclerosis is a chronic inflammatory condition of the arterial wall. Cholesterol particles, immune cells, calcium deposits, and fibrous tissue accumulate within vessel walls, forming plaques. Over time, these plaques may either narrow arteries gradually or rupture suddenly, leading to clot formation and myocardial infarction.
Coronary artery calcium (CAC) scoring has emerged as a strong predictor of future cardiovascular events. Large cohort studies, including the Multi-Ethnic Study of Atherosclerosis, demonstrate that calcium burden correlates directly with cardiac risk (Budoff et al., 2018).
Coronary CT angiography provides additional anatomical detail and can detect both calcified and soft plaques that may not be visible on traditional testing (SCOT-HEART Investigators, 2015).
Individuals with family history, persistent symptoms, or multiple risk factors may benefit from a comprehensive cardiovascular risk assessment and preventive evaluation.
Modern cardiology increasingly recognises heart disease as an inflammatory process. Cholesterol deposition alone does not fully explain cardiovascular events; vascular inflammation plays a central role.
High-sensitivity C-reactive protein (hs-CRP) is an established marker of systemic inflammation. The JUPITER trial demonstrated that individuals with elevated hs-CRP levels faced increased cardiovascular risk even when LDL cholesterol was within normal limits (Ridker et al., 2008).
Sleep deprivation, chronic stress, and periodontal disease are all associated with increased inflammatory burden. A large meta-analysis in the European Heart Journal found that short sleep duration significantly increases coronary heart disease risk (Cappuccio et al., 2011). Similarly, periodontal inflammation has been linked to vascular dysfunction and increased cardiac risk (Tonetti et al., 2013). Addressing stress physiology, sleep quality, and systemic inflammation is therefore a legitimate part of cardiovascular prevention.
Even with disciplined lifestyle habits, inherited factors can significantly influence cardiovascular risk. Lipoprotein(a), or Lp(a), is a genetically determined lipoprotein variant associated with increased risk of premature coronary artery disease and aortic stenosis. Elevated Lp(a) levels are largely unaffected by diet or exercise (Tsimikas, 2017).
Familial hypercholesterolemia is another inherited condition that results in markedly elevated LDL cholesterol from birth, substantially increasing early cardiovascular risk if not identified and managed appropriately (Nordestgaard et al., 2013). For individuals with strong family history of early heart disease, expanded screening beyond standard lipid panels may be appropriate.
Diet and physical activity remain foundational pillars of cardiovascular health. However, they represent only part of the picture. Inflammation, vascular biology, genetic predisposition, sleep patterns, and stress physiology all contribute to cardiovascular outcomes.
Heart disease rarely develops overnight. It is a progressive process influenced by multiple interacting systems. Early identification of risk factors allows for timely medical guidance and structured prevention. The goal is not to generate fear, but to promote informed awareness.
Libby P et al. Inflammation in atherosclerosis. [LINK]
Budoff MJ et al. Coronary artery calcium scoring and cardiovascular risk. JACC. [LINK]
SCOT-HEART Investigators. Coronary CT angiography [LINK]
Ridker PM et al. Rosuvastatin in individuals with elevated CRP. NEJM. [LINK]
Cappuccio FP et al. Sleep duration and coronary heart disease. Eur Heart J. [LINK]
Tonetti MS et al. Periodontitis and cardiovascular disease. J Clin Periodontol. [LINK]
Tsimikas S. Lipoprotein(a) and cardiovascular disease. NEJM. [LINK]
Nordestgaard BG et al. Familial hypercholesterolemia. Eur Heart J. [LINK]
This article is intended for educational purposes only and does not constitute medical advice, diagnosis, or treatment. Screening tests and treatment decisions should be made in consultation with a qualified healthcare professional based on individual clinical evaluation.
