Do I have to give up salt completely?

No - the aim is to cut down, not to eat a flavourless diet. Reducing added salt and high-salt foods helps your body hold less fluid, which eases breathlessness and swelling. Herbs, spices, garlic, ginger and lime add plenty of flavour. Your team can tell you what level is right for you.

Can I use a "low-sodium" salt substitute instead?

Check with your doctor or pharmacist first. Many salt substitutes replace sodium with potassium, and some heart failure medicines (and some kidney problems) already raise potassium - too much can be dangerous. Do not start one on your own.

How do I manage hawker food and eating out?

Ask for less salt or less gravy, do not finish all the soup or sauce, skip or halve instant-noodle seasoning sachets, go easy on soy and chilli dips, and choose steamed or grilled over braised or deep-fried where you can. Small habits add up.

I am losing weight without trying - is that good for my heart?

Not necessarily. While a healthy weight helps, unintentional weight loss or muscle loss can happen in more advanced heart failure and needs review - tell your team or ask to see a dietitian rather than just eating less.

Diet and Salt with Heart Failure: A Singapore Guide

Written & reviewed by the BestDoctors.sg editorial team · Last updated 29 Aug 2026 · General information, not medical advice

Quick answer. Cutting down on salt is a core part of managing heart failure, because salt makes the body hold on to fluid – which worsens breathlessness and swelling. Most salt hides in food, not the shaker, and Singapore’s hawker and home cooking is salt-heavy (soy and fish sauces, preserved foods, instant-noodle sachets), so small habits help a lot. Be careful with “low-sodium” salt substitutes – many are potassium-based and can be dangerous with heart failure medicines, so check first. Follow any fluid limit your team has set, limit alcohol, and flag unintended weight loss. A dietitian can tailor advice. This is general information, not a diagnosis.

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Why salt matters

Salt (sodium) is the headline of eating well with heart failure. Too much salt makes the body hold on to fluid, and extra fluid means more breathlessness and more swelling in the legs, ankles and tummy. Cutting down on salt is therefore a core, everyday part of keeping heart failure controlled – it works hand in hand with your water tablets and daily weighing. Importantly, most of the salt people eat comes from everyday packaged and prepared foods, not the salt added while cooking or at the table, so reading labels and choosing lower-salt foods matters as much as putting the shaker down.

The Singapore salt reality

Local eating is genuinely salt-heavy, which makes this especially relevant here. Soy sauce, fish sauce, oyster sauce, chilli and sambal, belacan, and preserved or salted foods – salted fish and egg, preserved vegetables, canned and braised dishes – all carry a lot of salt, as do stock cubes, seasoning powders and MSG. Instant noodles are a particular culprit, with most of the salt in the seasoning sachet. Hawker soups, gravies and sauces hold hidden salt too. None of this means giving up local food – it means knowing where the salt is, so you can enjoy your meals while keeping the total down.

Eating out and hawker tips

A few practical habits make a real difference when eating out. Ask for less salt or less gravy (“less salty”), and do not drink all the soup – much of the salt sits in the broth. Share or go easy on sauces and gravy rather than pouring it all over your rice, and go gently on the soy or chilli dip on the side. Choose steamed or grilled over deep-fried and braised dishes where you can, and skip or use only part of the instant-noodle seasoning sachet. Watch high-salt items such as canned and processed meats, luncheon meat, preserved foods, sauces and pastes, and salty snacks and preserved fruits.

Cooking with flavour, not salt

At home, you control the seasoning, so cook with flavour rather than salt. Use the aromatics and herbs already common in Singapore kitchens – ginger, garlic, shallots, lemongrass, spring onion, coriander, pepper, lime or calamansi, fresh chilli and pandan – to make food taste good without the salt. Don’t add salt at the table, taste before reaching for the shaker, add sauces sparingly and at the end, rinse canned foods, and choose reduced-salt versions of sauces and stocks where available. Cooking more from fresh, rather than from packets and jars, is one of the most effective ways to bring your salt intake down.

The salt-substitute warning

This is an important safety point. Many “low-sodium” or “reduced-salt” salt substitutes swap sodium for potassium. Several heart failure medicines already raise potassium levels, and some kidney problems do too – so a potassium-based substitute can push your potassium too high, which can be dangerous for your heart. So do not simply switch to a salt substitute on your own: check with your doctor or pharmacist first. It is a genuinely counter-intuitive risk – a product marketed as the “healthy” choice can be unsafe specifically for people with heart failure – which is exactly why it is worth flagging clearly.

Fluid, alcohol and weight

Beyond salt, a few other points. Some people are advised to limit fluids – follow your own team’s advice, as there is no universal amount (the fluid-and-weight guide covers this). Cut down on alcohol, which can worsen heart failure, affect blood pressure and rhythm, and interact with medicines; some people are advised to avoid it. Keep caffeine moderate. On weight, a healthy weight reduces strain on the heart – but in more advanced heart failure, unintentional weight loss and muscle wasting can happen and needs review, so the message is not simply “eat less.” Losing weight or appetite without trying should be flagged to your team or a dietitian.

Support in Singapore

A dietitian is the right person to set a personal salt and fluid plan, and one is especially valuable when you are juggling a fluid limit, a salt limit, diabetes or kidney disease at the same time, as these can pull advice in different directions; your doctor can refer you, and dietitians are available at public hospitals and in private practice. Your cardiology team or heart failure clinic sets your overall targets, and the Singapore Heart Foundation offers heart-healthy eating education. Aim for a balanced plate – plenty of vegetables and fruit, wholegrains and lean protein, with less processed, preserved and deep-fried food – adapted comfortably to rice- and noodle-based local meals.

Sources

NHS – Salt in your diet: nhs.uk
NHS – Living with heart failure: nhs.uk
NHS – Heart failure: nhs.uk

General information only. This guide supports, but does not replace, advice from your own doctor and heart failure team, and your own care plan always comes first. Call 995 or go to A&E for severe or sudden breathlessness, breathlessness at rest or that stops you lying down at all, chest pain, coughing up pink frothy spit, fainting, or blue lips – these can be a medical emergency. Contact your heart failure team or doctor promptly if you have a rapid weight gain over a few days, increasing swelling, or worsening breathlessness, as these can mean fluid is building up. Never start, stop or change your heart failure medicines without medical advice, and avoid anti-inflammatory painkillers unless your doctor says they are safe for you. Weigh yourself and follow any fluid or salt limits as your own team has advised. If you are struggling emotionally, the Samaritans of Singapore (SOS) are on 1767 and mindline.sg on 1771.

Diet & Salt with Heart Failure