Heart Health — Lifestyle First
Cardiovascular health is one of the most important health indicators. Before considering any supplement, it is essential to understand: lifestyle is the foundation. Regular exercise, balanced diet, adequate sleep, stress management, and smoking cessation are all more important than any supplement.
Supplements can complement a healthy lifestyle, not replace it. Always consult your doctor, especially if you have an existing heart condition or take medication.
Important: This article is for informational purposes. For heart conditions, always follow your cardiologist's recommendations.
Essential Supplements for Heart Health Support
1. EPA + DHA (Omega-3 Fatty Acids)
EPA and DHA contribute to the normal function of the heart (EFSA-approved claim, at 250 mg EPA+DHA per day). This is one of the most strongly evidenced heart-health supplements.
- Recommended dose: 250-2,000 mg EPA+DHA per day
- EFSA claim: Beneficial effect is obtained with a daily intake of 250 mg EPA+DHA
- Form: Fish oil (triglyceride form) or algae oil
- Tip: Take with meals containing fat — improves absorption
- Food sources: Fatty fish (salmon, mackerel, sardines) 2-3 times per week
2. Magnesium
Magnesium contributes to normal muscle function (EFSA-approved claim), including heart muscle function. Magnesium deficiency is associated with heart rhythm irregularities (DiNicolantonio et al., 2018).
- Recommended dose: 300-400 mg elemental magnesium per day
- Form: Magnesium taurate is traditionally associated with heart health support. Magnesium glycinate is also a good choice.
- Food sources: Dark leafy greens, nuts, seeds, whole grains
- Tip: Most people do not get enough magnesium from food alone
3. Potassium
Potassium contributes to the maintenance of normal blood pressure (EFSA-approved claim). It is an important electrolyte that counterbalances the effects of sodium.
- Recommended dose: 3,500-4,700 mg per day (primarily from food)
- Food sources: Bananas, potatoes, spinach, avocado, legumes
- Important: High-dose potassium supplements can be dangerous. Prefer dietary sources.
- Warning: If you have kidney disease, consult your doctor before using potassium supplements
4. Coenzyme Q10 (CoQ10)
CoQ10 is a natural substance involved in cellular energy production. Heart muscle is one of the most energy-demanding tissues in the body and naturally contains high CoQ10 levels.
- Recommended dose: 100-200 mg per day
- Form: Ubiquinol (active form) is better absorbed than ubiquinone
- Tip: Fat-soluble — take with a fat-containing meal
- Note: CoQ10 levels in the body naturally decline with age
5. Vitamin K2
Vitamin K2 (menaquinone) contributes to normal calcium metabolism. It directs calcium to bones rather than soft tissues.
- Recommended dose: 100-200 mcg in MK-7 form per day
- Food sources: Natto (fermented soybeans), cheese, egg yolk
- Tip: Especially important for those taking vitamin D and calcium
- Warning: If you use blood-thinning medication (warfarin), consult your doctor before taking vitamin K
Heart-Healthy Lifestyle Habits
Supplements are one piece of the puzzle. The foundation of heart health is:
1. Regular exercise: At least 150 minutes of moderate activity per week
2. Balanced diet: Rich in vegetables, fruits, whole grains, legumes, nuts, and fatty fish
3. Sodium restriction: Less than 5 g of salt per day
4. Healthy weight: Excess weight strains the heart
5. Stress management: Chronic stress affects the heart negatively
6. Adequate sleep: 7-9 hours of quality sleep
7. Smoking cessation: Smoking is a primary cardiovascular risk factor
Estonian Context
Cardiovascular disease is the leading cause of death in Estonia. The Nordic diet, which includes fatty fish, whole grains, and berries, provides a naturally good foundation for heart health. However:
- Winter vitamin D deficiency also affects heart health
- Omega-3 intake is often insufficient when fish is not eaten regularly
- Stress and a fast-paced lifestyle affect magnesium levels
Common Mistakes
1. Prioritising supplements over lifestyle — no pill compensates for poor diet and inactivity
2. Ignoring medical advice — for heart conditions, always follow your doctor's guidance
3. Overconsumption of potassium supplements — high potassium levels are dangerous, especially with kidney disease
4. Vitamin K2 with blood thinners — always consult your doctor
5. Omega-3 deficiency — fatty fish 2-3x weekly or quality fish oil is important
Frequently Asked Questions
Does omega-3 really help the heart?
Yes — the contribution of EPA and DHA to normal heart function is confirmed by EFSA (at 250 mg per day). This is one of the most strongly evidenced nutrient-heart connections.
Should I take CoQ10?
CoQ10 is especially relevant for those over 40, as natural production declines with age. Consult your doctor, especially if you take statins.
Is vitamin K2 dangerous?
K2 at standard doses (100-200 mcg) is generally safe. The exception is for users of blood-thinning medication (warfarin) — consult your doctor.
See Also
Browse our omega-3 selection →
References
1. DiNicolantonio, J.J., Liu, J. & O'Keefe, J.H. (2018). Magnesium for the prevention and treatment of cardiovascular disease. Open Heart, 5(2), e000775.
2. Hu, Y. et al. (2019). Marine omega-3 supplementation and cardiovascular disease: an updated meta-analysis of 13 randomized controlled trials involving 127,477 participants. Journal of the American Heart Association, 8(19), e013543.
3. Sarter, B. et al. (2020). Coenzyme Q10 and cardiovascular disease: a review. Journal of Cardiovascular Medicine, 21(3), 189-197.
4. EFSA Panel on Dietetic Products, Nutrition and Allergies (2010). Scientific opinion on the substantiation of health claims related to EPA, DHA and maintenance of normal cardiac function. EFSA Journal, 8(10), 1796.
Disclaimer
A food supplement is not a substitute for a varied and balanced diet and a healthy lifestyle.
