So, where does magnesium fit in when it comes to blood pressure regulation?
The current answer is that there’s no clear and obvious link between magnesium and blood pressure. Some early studies indicate that higher magnesium intake may help contribute to lower blood pressure, but much more research is needed to understand the depth of this link.3,9
If there is a link, it might be that magnesium could potentially lower blood pressure via multiple mechanisms, given its role in so many different biochemical processes.3,4 Magnesium helps regulate our levels of calcium, sodium and potassium – and together, these minerals could play a role in blood pressure management.3
Magnesium may also help the body to release prostacyclin, a hormone-like compound that reduces tension in blood vessel walls.4,5
Analysis of 34 clinical trials found a link between magnesium intake and reduced blood pressure.5 The researchers concluded that magnesium supplementation may be linked with lower blood pressure in adults, but more rigorous and well-designed trials are essential to confirm these effects.5
The EFSA (European Food Safety Authority) have currently said the quality of the evidence is not up to scratch regarding the link between magnesium and blood pressure, and evidence was inconsistent and sometimes weak. Further studies are needed in this area to explore this link.10
If you have high blood pressure, always follow the guidance from your doctor regarding what lifestyle changes or medication you need. Do not stop taking your medication without consulting with your GP first.