Salt is one of the most essential minerals in our diet, yet it is also one of the most misunderstood. so how much does your body really need? The main component of table salt is sodium chloride, which provides sodium — a mineral your body needs to function properly. As we get older, particularly after 45, getting the right amount of salt matters more than ever. Too much can raise blood pressure and strain the heart; too little can leave you feeling weak and fatigued. Understanding how much salt your body really needs is the first step towards better health.
Why Your Body Needs Salt
Sodium plays a vital role in several key bodily functions:
- Fluid balance: Regulates the amount of water inside and outside your cells, supporting proper hydration.
- Nerve function: Allows nerves to send electrical signals throughout the body.
- Muscle contraction: Helps muscles, including the heart, contract normally. This works alongside other minerals like magnesium.
- Blood pressure regulation: Works with potassium and other systems to maintain healthy circulation.
- Nutrient absorption: Assists the intestines and kidneys in absorbing and transporting certain nutrients.
Benefits of Getting Enough Salt
When you consume the right amount of salt, your body benefits in several ways:
- Maintains proper hydration and fluid balance throughout the day.
- Supports healthy nerve signalling and muscle function.
- Prevents symptoms of low sodium (hyponatraemia), such as weakness, nausea, headaches, confusion, and in severe cases, seizures.
- Helps replace sodium lost through heavy sweating, prolonged physical activity, vomiting, or diarrhoea.
Risks of Too Much Salt
Excess sodium intake is one of the leading dietary risk factors for chronic disease. Consuming too much salt is linked to:
- High blood pressure (hypertension), which increases strain on the heart and blood vessels.
- Increased risk of heart disease and stroke. A Mediterranean-style diet can help reduce these risks.
- Kidney strain and worsening of existing kidney conditions.
- Water retention, causing uncomfortable swelling and bloating.
- Increased calcium loss in urine, which may affect bone health over time, particularly for women after menopause.
Risks of Too Little Salt
While cutting back on salt is important for many people, going too low can also cause problems. Very low sodium levels (hyponatraemia) can lead to:
- Persistent fatigue and weakness.
- Muscle cramps, especially during or after exercise.
- Dizziness and lightheadedness.
- Nausea and loss of appetite.
- Confusion and difficulty concentrating.
- In severe cases, seizures and serious neurological complications.
How Much Salt Do You Need Each Day?
Most health organisations, including the NHS, recommend limiting sodium intake to around 2,000–2,300 mg per day. This is equivalent to roughly 5–6 grams of salt, or about one teaspoon.
However, many people consume far more than this without realising it, largely because processed and packaged foods contain high levels of hidden sodium. Reading nutrition labels and cooking from scratch with whole ingredients are two of the most effective ways to keep your salt intake in check.
A fibre-rich diet based on whole foods naturally tends to be lower in sodium than one relying on ready meals and processed snacks.
Common Sources of Sodium in Your Diet
Salt is found in many everyday foods, often in larger quantities than you might expect:
- Table salt (used in cooking and at the table).
- Bread, rolls and baked goods.
- Cheese and dairy products.
- Cured and processed meats (bacon, ham, sausages).
- Soups, sauces and condiments.
- Ready meals, crisps and packaged snacks.
The Bottom Line
Salt is not the enemy. Your body genuinely needs it for hydration, nerve signalling and muscle function. The goal is not to eliminate salt from your diet, but to consume it in moderation and be mindful of hidden sodium in processed foods.
For women over 45, paying attention to salt intake is especially worthwhile. Excess sodium can accelerate calcium loss from bones and contribute to high blood pressure, both of which become greater concerns with age. By choosing whole, nutrient-dense foods and seasoning with herbs and spices rather than relying on salt alone, you can support your overall health without sacrificing flavour.