April 2026

What Magnesium Actually Does in the Body (And Why It Matters More Than Most People Think)

Magnesium doesn't always get the attention it deserves. While vitamins like Vitamin C and Vitamin D tend to take the spotlight, magnesium quietly plays a role in more than 300 biological processes in the body, many of which influence how we feel and function every single day.

Here's a closer look at what magnesium actually does, and why consistent daily intake matters.

Energy Production

Every cell in the body requires energy to function, and magnesium plays a central role in how that energy is produced. It helps activate ATP, the molecule that cells use as their primary energy currency. Without adequate magnesium, the body's ability to produce energy efficiently is compromised, which is why magnesium is so closely linked to energy metabolism and the reduction of tiredness and fatigue.

Muscle Function

Magnesium contributes to normal muscle function by supporting the balance between muscle contraction and relaxation. Calcium triggers muscle contraction, while magnesium supports the relaxation phase, meaning these two minerals work together to keep muscles functioning smoothly.

When magnesium intake is consistently adequate, muscles are better supported in their normal function — contributing to comfortable movement and physical performance.

Nervous System Support

Magnesium contributes to normal nervous system function by helping regulate the signals between the brain and the rest of the body. This plays a role in how the body:

Responds to everyday stress
Processes nerve signals
Supports normal muscle movement and coordination
Maintains normal psychological function

This is one reason why magnesium is so often associated with a sense of calm and balance, it's working at a nervous system level to support the body's natural equilibrium.

Cardiovascular System Help

As an essential mineral involved in muscle and nervous system function, magnesium contributes to the normal function of the body's cardiovascular system. Maintaining consistent magnesium intake as part of a balanced diet supports overall cardiovascular system health and general wellbeing.

Bone Health

Around 60% of the body's magnesium is stored in the bones. Magnesium works alongside nutrients like calcium and vitamin D to support normal bone structure and mineralisation, making it an important part of a broader approach to long-term bone health.

Why Consistent Intake Matters

Because magnesium is involved in so many of the body's processes, consistent daily intake is important. Yet modern diets, high in processed foods and low in variety, can sometimes make it difficult to maintain adequate magnesium levels through food alone.

Magnesium-rich foods include:

Leafy green vegetables
Nuts and seeds (particularly almonds, cashews and pumpkin seeds)
Whole grains and legumes
Dark chocolate

For people who find it difficult to maintain regular balanced meals, whether due to a busy lifestyle, recovery after surgery, or simply inconsistent nutrition, a quality magnesium supplement can be a practical and convenient way to support consistent daily intake.

BN Magnesium Glycinate uses a pure, single-ingredient chelated form of magnesium, designed for everyday use and easy to incorporate into any routine.

Vitamins and minerals can only be of assistance if dietary intake is inadequate. Supplements are designed to complement a balanced diet, not replace it.

Always read the label and follow the directions for use. If symptoms persist, talk to your health professional.