# Nutrition in heart valve diseases
General nutritional principles
In heart valve diseases, nutrition plays a supporting role. The goal is mainly to relieve the heart as much as possible and prevent complications. In practice, this means: nutrition that helps maintain normal blood pressure, keeps weight stable, and does not fuel inflammation.
**Salt intake**
The amount of salt you eat affects blood pressure and fluid retention.
ProveniIncluded in official guidelines, or approved by EMA or FDA
Reducing salt intake helps keep blood pressure lower. For people with heart valve diseases, the recommendation is often to use salt moderately, especially if there are signs of heart failure or fluid buildup. This does not necessarily mean a strict low-salt diet, but rather: making conscious choices, limiting processed foods (where a lot of salt is hidden), and not over-salting when cooking. Your healthcare provider can give you more precise advice on how much salt fits your situation.
**Fluid intake**
If your heart has difficulty pumping blood around, drinking too much can lead to fluid accumulation.
ProveniIncluded in official guidelines, or approved by EMA or FDA
Fluid restriction is often recommended for heart failure or certain valve diseases with congestion. However, this is very personal: some patients need to be less strict about this than others. It's best to discuss this with your doctor or dietitian.
**Weight**
Extra weight puts additional strain on the heart.
ProveniIncluded in official guidelines, or approved by EMA or FDA
A healthy weight helps relieve the heart's workload. This doesn't need to be drastic; gradual, stable changes are usually better than rapid diets.
Specific nutrients
**Potassium and magnesium**
These minerals play a role in heart rhythm and heart muscle contraction.
ProveniIncluded in official guidelines, or approved by EMA or FDA
Adequate intake of them supports normal heart function. Vegetables, fruit and whole grains naturally contain these substances. Note: if you are taking certain medications (for example ACE inhibitors or potassium-sparing diuretics), your doctor may advise you to keep an eye on potassium. This is not a reason to avoid certain vegetables, but it is something to discuss with your healthcare provider.
**Omega-3 fatty acids**
These fatty acids have anti-inflammatory effects.
ResearchediPositive results in clinical studies, not yet standard treatment
Studies show that regular intake of oily fish (salmon, mackerel, herring) and plant-based sources (flaxseed, walnuts) can be beneficial for heart health. This also applies to heart valve diseases as part of a heart-healthy eating pattern, although specific studies for valve diseases are less common.
**Antioxidants**
Fruits and vegetables contain vitamins and plant substances that reduce inflammation.
ResearchediPositive results in clinical studies, not yet standard treatment
Regular intake of plenty of colored vegetables and fruits is recommended as part of a heart-healthy diet. The evidence is less clear specifically for heart valve diseases, but the general benefits for cardiovascular health are well documented.
Food and medications
Certain food choices can interact with medicines you take for heart valve diseases.
**Vitamin K and blood thinners**
If you have a mechanical heart valve prosthesis, you will likely be prescribed warfarin (Coumarin).
ProveniIncluded in official guidelines, or approved by EMA or FDA
The effect of warfarin is influenced by vitamin K intake. This does not mean you should avoid vegetables (they are actually healthy), but your intake must be consistent. Large, sudden changes in green leafy vegetables can affect your INR value. Discuss this with your anticoagulation clinic or family doctor.
**Grapefruit and certain medications**
ProveniIncluded in official guidelines, or approved by EMA or FDA
Grapefruit (and to a lesser extent grapefruit juice) can change the effects of some medications by affecting liver breakdown. Check this with your pharmacist or doctor, especially if you are taking certain statins or other heart medications.
**Sodium and diuretics**
If you are taking diuretics, salt restriction can help optimize their effect. This is something to work out with your doctor.
Nutrition and infection risk
In heart valve diseases (especially with prostheses), the risk of heart inflammation (endocarditis) is relevant.
ResearchediPositive results in clinical studies, not yet standard treatment
Hygiene in food preparation and prevention of food bacteria is a logical precaution, although direct evidence that specific food choices prevent endocarditis is limited. Well-cooked food, clean utensils and hands, and prevention of spoiled food are standard food safety that applies to everyone, especially if your immune system is weakened.
Nutrition and inflammatory markers
Recent studies examine inflammatory markers (such as GDF-15) in heart patients.
ExperimentaliOngoing in study setting, outcome still unknown
How nutrition can determine these markers is still being investigated. To date, there is no evidence that specific nutritional supplements directly normalize these markers, and supplements without medical guidance are not recommended.
Practical recommendations
- **Work together with your dietitian or nutritionist.** They can create a tailored plan, taking into account your medications, your specific valve condition, and any other conditions.
- **Eat varied:** plenty of vegetables, fruit, whole grains, fish, lean meat and legumes form a good basis.
- **Limit processed food:** it often contains a lot of salt and trans fats.
- **Drink according to advice:** this can depend on your situation. No fixed number for everyone.
- **Pay attention to consistency:** especially with vitamin K intake and fluid intake. Sudden changes can have an effect.
- **Avoid diets without medical advice:** rapid weight loss can disrupt heart rhythms.
Nutrition and rehabilitation
After heart valve procedures, good nutrition is important for recovery. This can mean: adequate protein (muscle repair), good fluid balance and regular meals at fixed times. Your doctor or rehabilitation team will advise you on this.
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_This information never replaces a doctor's judgment. Always discuss your situation with your own healthcare provider._