Every day in the UK, approximately 500 people experience a heart attack. Some of them never had any symptoms before, others ignored subtle warning signs. Meanwhile, science shows clearly: a heart attack is not fate but a consequence of processes that can be stopped or reversed. Cardiologist Peter Attia demonstrates in his practice that proper prevention can reduce risk by up to 80%. Find out what you can do right now to protect your heart!
Key information:
- Early symptoms of heart disease are often ignored or mistaken for other conditions
- LDL cholesterol and blood pressure are the two most important risk factors to control
- Regular physical activity reduces heart attack risk by 30-50%
- Mediterranean diet protects arteries from atherosclerosis
- Simple blood tests can detect danger years before a heart attack
What are the symptoms of heart disease?
The heart sends warning signals long before a heart attack, but many people fail to recognise them. Chest pain is the best-known symptom, yet it often appears only in advanced stages of disease. Earlier symptoms tend to be subtle: shortness of breath during exertion that previously caused no problem, faster fatigue when climbing stairs, irregular heartbeat. Women more often than men experience atypical symptoms such as pain between the shoulder blades or nausea.
Particular attention should be paid to symptoms appearing during physical activity. Chest tightness that subsides with rest is a classic sign of angina pectoris, meaning insufficient blood supply to the heart muscle. The body is signalling that coronary arteries cannot deliver enough blood to the heart during exertion. This is the moment when intervention can prevent a heart attack.
Early warning signs:
- Shortness of breath during exertion – especially if it didn’t occur before
- Faster fatigue – decreased tolerance for physical activity
- Radiating pain – to arm, jaw, back or stomach
- Heart palpitations – irregular or accelerated heartbeat
- Ankle swelling – may signal problems with pumping blood
Main risk factors for heart attack
Heart attack risk builds over years from a combination of factors we can influence and those we cannot change. Age, sex and family history are elements beyond our control, but they account for only part of the risk. The remaining factors are habits and health parameters we can modify: cholesterol levels, blood pressure, blood sugar, body weight, physical activity, tobacco smoking. It is precisely these elements that modern cardiac prevention focuses on.
Tobacco smoking doubles heart attack risk, and combined with high blood pressure and cholesterol, multiplies it many times over. Each additional risk factor doesn’t just add up but amplifies the effect of others. That’s why even partial reduction of one brings disproportionately large benefits. Research shows that quitting smoking within a year reduces heart attack risk by half, and after several years it drops to nearly the level of someone who never smoked.
Modifiable risk factors:
- Elevated LDL cholesterol – the main builder of atherosclerotic plaques
- High blood pressure – damages artery walls
- Tobacco smoking – accelerates atherosclerosis and creates clots
- Diabetes and insulin resistance – intensify inflammation
- Abdominal obesity – source of pro-inflammatory cytokines
- Lack of physical activity – weakens heart and blood vessels
Impact of cholesterol and blood pressure on arteries
LDL cholesterol is not simply “bad cholesterol” but a key element in the development of atherosclerosis. LDL particles penetrate the damaged endothelium of vessels and oxidise within the artery wall. The body sends macrophages to engulf these particles, but overloaded cells form foam cells, the core of future atherosclerotic plaque. Studies have shown that maintaining LDL below 70 mg/dl drastically slows this process and may even cause regression of existing plaques.
High blood pressure acts like a constant hammer striking vessel walls. Every heartbeat at pressure of 160/100 instead of 120/80 places additional strain on the delicate endothelium. Over time, vessels lose elasticity, harden, and micro-damage becomes sites for cholesterol deposits. Research conducted by the team at Oxford University confirmed that lowering systolic pressure by every 10 mmHg reduces heart attack risk by approximately 20%.
Best exercises for a healthy heart
Physical activity is one of the most powerful medicines for the heart, available without prescription. Regular movement improves heart efficiency, lowers blood pressure, raises protective HDL cholesterol levels and reduces insulin resistance. It’s not about exhausting workouts but about consistent, moderate activity. Even daily walks significantly reduce heart disease risk. Those interested in detailed training protocols will find guidance in materials about cardio exercises for longevity.
The optimal programme combines aerobic training with strength exercises. Cardio, meaning walking, running, swimming or cycling, directly strengthens the heart and improves circulation. Strength training builds muscle mass, which increases metabolism and improves insulin sensitivity. Research shows that people performing both types of training have lower mortality risk from cardiovascular causes than those who practise only one type of activity.
Activity recommendations for heart health:
- 150-300 minutes of moderate aerobic activity weekly
- 2-3 sessions of strength training for all major muscle groups
- Daily movement – minimum 7000 steps, optimally 10000
- Sitting breaks – stand up every 30-60 minutes
- Gradual increase in intensity as fitness improves
Mediterranean diet in cardiovascular protection
Among all eating patterns, the Mediterranean diet has the strongest scientific evidence for heart protection. It’s based on vegetables, fruits, whole grains, legumes, nuts and olive oil as the main fat source. Fish appears several times weekly, red meat rarely. This combination provides fibre, antioxidants, omega-3 fatty acids and polyphenols that together work anti-inflammatory and protect vessels. More about the benefits of this diet can be found in the text about secrets of the Mediterranean diet.
Key elements of a heart-protective diet:
- Extra virgin olive oil – 3-4 tablespoons daily lower inflammation
- Fatty fish – salmon, mackerel, sardines 2-3 times weekly
- Nuts and seeds – a handful daily improves lipid profile
- Leafy vegetables – source of nitrates that dilate blood vessels
- Legumes – fibre and protein without saturated fats
Equally important as adding healthy products is eliminating harmful ones. Processed food, trans fats, excess sugar and salt directly contribute to atherosclerosis development. Sugary drinks raise triglyceride levels, salt increases blood pressure, and trans fats damage vessel endothelium. Replacing these products with natural alternatives is one of the fastest ways to improve heart health.
Blood tests worth doing
A standard lipid panel is just the beginning. Besides total cholesterol, LDL, HDL and triglycerides, it’s worth checking additional markers that more precisely determine risk. Apolipoprotein B (ApoB) shows the number of particles capable of penetrating artery walls, which can be a better predictor than LDL level alone. Lipoprotein(a) is a genetically determined risk factor whose knowledge allows earlier, more intensive prevention.
Inflammatory markers such as high-sensitivity CRP (hsCRP) inform about ongoing inflammation in the body, which promotes instability of atherosclerotic plaques. Elevated hsCRP with normal cholesterol signals increased risk that basic tests won’t catch. Glycated hemoglobin (HbA1c) detects insulin resistance and prediabetes long before fasting glucose rises.
Recommended cardiac tests:
- Full lipid panel – total cholesterol, LDL, HDL, triglycerides
- ApoB – number of aerogenic lipoprotein particles
- hsCRP – high-sensitivity inflammation marker
- HbA1c – average blood sugar level over past 3 months
- Blood pressure – measured at home, not just in the surgery
Your strategy for a healthy heart
Heart protection is a marathon, not a sprint. The most effective strategies are based on lasting habit changes, not short-term diets or intense training programmes. Start with one change, establish it over a few weeks, then add another. Monitor your parameters, work with your doctor and don’t wait for symptoms. Every day of healthy choices is an investment in years of life without a heart attack and other cardiovascular problems.
FAQ: Most frequently asked questions about heart attack
At what age should cardiac prevention begin?
Prevention is worth starting after age 20 with regular blood pressure measurements and lipid panels every 5 years, and after age 40 tests should be more frequent and detailed.
Can a heart attack occur without prior symptoms?
Yes, so-called silent heart attacks occur especially in diabetics and elderly people, which is why regular check-ups are crucial even without complaints.
How long do you need to exercise to protect your heart?
Just 150 minutes of moderate activity weekly, roughly 20-30 minutes daily, significantly reduces heart disease risk.
Can atherosclerosis be reversed?
Intensive lowering of LDL cholesterol below 70 mg/dl combined with a healthy lifestyle can slow and even partially reverse atherosclerotic changes.
References:
1. Yusuf, S., et al. (2004). Effect of potentially modifiable risk factors associated with myocardial infarction in 52 countries (the INTERHEART study). The Lancet. https://doi.org/10.1016/S0140-6736(04)17018-9
2. Estruch, R., et al. (2018). Primary Prevention of Cardiovascular Disease with a Mediterranean Diet Supplemented with Extra-Virgin Olive Oil or Nuts. New England Journal of Medicine. https://doi.org/10.1056/NEJMoa1800389
3. Ference, B. A., et al. (2017). Low-density lipoproteins cause atherosclerotic cardiovascular disease. European Heart Journal. https://doi.org/10.1093/eurheartj/ehx144
