Magnesium Deficiency Explained: Symptoms, Causes, Muscle Twitching, And Headaches
Posted on August 6, 2026 by Daisy Payne
Magnesium deficiency (hypomagnesaemia) means your magnesium levels have dropped too low, and yes, it genuinely can cause muscle twitching and headaches. Low magnesium directly messes with nerve signalling and muscle function, which is exactly why twitches, cramps, and migraines tend to show up together. KEY POINTS Below 0.70 mmol/L on a blood test? That’s hypomagnesaemia, […]