CLAIM: An Instagram post claims that placing a pinch of sea salt under the tongue, then drinking water, cures headaches in 5 minutes, claiming sodium restores electrolyte balance, reduces brain blood vessel swelling, and stops migraine pain signals. It also links dehydration/electrolyte loss to headaches generally. 

FACTS: There is no evidence that salt under the tongue can stop a migraine in five minutes. Experts and studies confirm migraines stem from complex nerve and inflammatory processes, not simple blood vessel swelling that salt can fix instantly. While dehydration can cause some headaches, and hydration studies support this, adding salt when sodium levels are normal offers no benefit and may raise blood pressure risks. 

An Instagram account named creepy.fact, which has over two million followers, has claimed that placing a small pinch of sea salt under the tongue and then drinking water can get rid of a headache within five minutes. The post has received over 41,000 likes and nearly 1,500 reposts. 

According to the post, sodium in the salt helps restore electrolyte balance, brings down swelling in the brain’s blood vessels, and stops migraine pain signals.

“Sodium is an essential electrolyte that helps regulate fluid balance, nerve signaling, and normal muscle function throughout the body,” the caption of the post reads.

The post further claims that when a headache is linked to dehydration, heavy sweating, heat exposure, exercise, or loss of electrolytes, replacing fluids and sodium may help the body regain its balance. This, it says, is why electrolyte drinks and salty foods are often used after major fluid loss. However, the post also admits that not every headache is caused by dehydration, and that taking extra salt may not help if sodium levels are already normal.

“Staying properly hydrated and maintaining a balanced electrolyte intake can make a bigger difference than most people realize,” the caption adds.

What are the studies saying?

A study published in the Journal of Clinical Neuroscience (2020) found a link between drinking water and the severity of migraine headaches. Researchers studied 256 women aged 18 to 45 who visited neurology clinics for the first time. Migraine was confirmed by a neurologist using standard diagnostic criteria and headache severity was measured using disability scores, pain scales and a 30-day headache diary.

The study found that people who drank more water reported less severe headaches, fewer headache days and shorter headache duration. The researchers noted, “The water intake is the best intervention to reduce or prevent headache pain.”

However, the authors were careful to add that this was an observational study, meaning it shows a link but not proof that low water intake directly causes worse migraines. They said more clinical trials are needed to confirm this relationship.

A separate study published in Medical Sciences (2021) offers a very different perspective on salt and migraine, one that actually complicates the Instagram claim rather than supporting it.

The paper suggested that migraine could sometimes be a withdrawal symptom of eating too much salt, not a lack of it. The author points to research on food addiction, arguing that salty food can act like a substance people become dependent on, with cravings and withdrawal effects similar to other addictions.

The study noted that people often crave salty foods just before a migraine begins and eating salt at that point can ease the pain. It links this to fluid retention, saying binge eating high-salt food can cause swelling similar to what happens before a migraine attack. The study further stated, “Further research is needed to investigate the pain experienced from sodium chloride withdrawal in migraine headache.”

What do experts observe?

Dr Aravinda S N, lead consultant, internal medicine, at Aster RV Hospital in Bangalore, said there is no scientific basis for the claim that salt under the tongue can stop a migraine within minutes.

“There is currently no known physiological process nor any evidence proving that putting salt under the tongue can help reduce the size of the blood vessels in the brain or stop the signals of the migraine within 5 minutes,” he said. He explained that migraines involve the trigeminal nerve system and inflammatory processes in the brain, and are not simply caused by swollen blood vessels that salt can fix instantly.

Dr Aravinda also observed that only a small amount of sodium from a pinch of salt would dissolve under the tongue, with most of it ending up swallowed. He added that the body tightly controls blood sodium levels, so no meaningful rise happens within minutes.

He agreed that dehydration can cause headaches, but said migraines are different, often bringing throbbing pain, nausea, and sensitivity to light. Dr Aravinda also cautioned that taking extra salt when sodium levels are already normal serves no purpose and could raise blood pressure over time, especially in people who are sodium sensitive.

Also read: Recurring headaches, memory lapses? These subtle symptoms could point to a brain tumour  

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