Tingling legs keeping you up at night? Experts warn it could signal your body is missing a key mineral many people don’t realise they need

If you find your legs twitching or tingling at night, it might be more than just an annoyance. One expert claims it could be your body’s way of flagging a nutrient deficiency.

Dr Eric Berg, who has more than 2.3 million followers and over 30 million likes on TikTok, shared the insight in a viral video. He said: “Restless Legs Syndrome at night is a classic magnesium deficiency.”

Restless Legs Syndrome (RLS) is a common neurological condition. According to the National Library of Medicine, it affects around 5% to 10% of adults and causes an uncontrollable urge to move the legs, especially at night .

Magnesium is an essential mineral involved in hundreds of processes in the body. Research cited by Verywell Health explains it supports nerve function, muscle relaxation and sleep regulation .

Low magnesium levels may contribute to nerve overactivity. According to Healthline, when magnesium is lacking, nerves can become overexcited, triggering muscle contractions and symptoms linked to RLS.

Magnesium also helps muscles relax properly. Reports from the Restless Leg Syndrome Relief Centre suggest low levels can lead to increased muscle tension and discomfort, especially at night .

The mineral is found in a wide range of foods. According to health experts, good sources include leafy greens, nuts, seeds, whole grains, fish and bananas .

Despite its importance, some people may not get enough. The European Food Safety Authority highlights magnesium’s role in energy production, muscle function and reducing fatigue .

Symptoms of deficiency can go beyond restless legs. According to nutrition guidance, low magnesium may also cause muscle cramps, fatigue, irritability and sleep problems .

However, experts stress magnesium isn’t the only possible cause of RLS. Research reported by Bolt Pharmacy, referencing NICE guidance, says iron deficiency is one of the most common underlying causes .

Other factors can also play a role. According to Verywell Health, RLS has been linked to conditions such as diabetes, nerve damage and even genetics .

Evidence on magnesium as a treatment is still mixed. Studies reviewed by Drugs.com suggest it may help some people, particularly those who are deficient, but more research is needed .

Experts advise speaking to a GP if symptoms persist. Identifying the underlying cause, whether nutritional or medical, is key to finding the right treatment and improving sleep.