A sudden headache can make it difficult to concentrate on work or carry on with your daily routine. While many people immediately reach for a painkiller, there are situations where a headache may be linked to something as simple as dehydration.

Celebrity nutritionist Shweta Shah has shared a simple salt-and-water remedy that she says may help when a headache is associated with dehydration or low sodium levels. However, this should not be considered a guaranteed treatment, and frequent or severe headaches should not be managed only with home remedies.

What Is the Salt-and-Water Remedy?

According to the nutritionist's suggestion, take a small pinch of salt on the tongue and then drink a glass of water.

The idea behind the remedy is that salt provides sodium, while water helps replenish fluids. If dehydration is contributing to the headache, drinking water may help you feel better.

However, headaches can have many different causes, including lack of sleep, stress, migraine, skipped meals, eye strain, illness and dehydration. A salt remedy is therefore unlikely to help every type of headache.

Why Does Sodium Matter?

Sodium is an essential electrolyte that helps the body maintain fluid balance and supports normal nerve and muscle function.

When someone loses substantial amounts of fluid and electrolytes through sweating, vomiting or diarrhoea, replacing both fluids and electrolytes may be important. Simply adding extra salt, however, isn't appropriate for everyone.

There is also no reliable basis for claiming that a pinch of salt will improve a headache within exactly five minutes or block migraine-related brain signals.

Who Should Avoid Adding Extra Salt?

People with high blood pressure or certain heart, kidney or other medical conditions may be advised to limit sodium. Adding extra salt without medical guidance may therefore be inappropriate for them.

If you already follow a low-sodium diet, don't use this remedy as a substitute for your doctor's advice.

Salt Water Can Also Be Used for Gargling

Warm salt-water gargling is a commonly used home measure for a sore throat. It can help soothe throat irritation and loosen mucus temporarily.

For a toothache, however, salt-water rinsing may provide temporary relief or help keep the mouth clean, but it does not treat the underlying cause. Persistent tooth pain should be evaluated by a dentist.

Don't Ignore Frequent Headaches

A headache that occurs occasionally may improve with rest, hydration, food and other simple measures, depending on the cause. But recurring, severe or unusual headaches deserve medical attention.

Seek urgent medical care if a headache is sudden and extremely severe, follows a head injury, or occurs with symptoms such as weakness, confusion, fainting, difficulty speaking, vision problems or a high fever.

Most importantly, don't make a habit of taking painkillers repeatedly without understanding why your headaches are occurring. If headaches are becoming frequent, consult a healthcare professional to identify the underlying cause.