Magnesium
Magnesium is an essential mineral involved in hundreds of processes throughout the body. It supports normal muscle and nerve function, cellular energy production, bone health, electrolyte balance and normal heart rhythm, making it one of the foundational minerals for everyday health.
The body cannot manufacture magnesium, so it needs to come from food, drinks or supplements. Most magnesium is stored within bones and soft tissues rather than circulating in the blood.
Muscles and the Nervous System
Magnesium helps regulate the movement of calcium and potassium across cell membranes, which is essential for normal nerve signalling and muscle contraction and relaxation.
This makes adequate magnesium particularly relevant for active people, older adults and anyone wanting to maintain healthy muscle function and mobility.
Its role in the nervous system also explains why magnesium is commonly found in formulas for relaxation, stress and sleep support. Magnesium does not act as a sedative but provides one of the minerals required for normal nervous system function and muscular relaxation.
Energy Production
Every cell needs energy, and magnesium participates directly in the processes used to produce it.
Magnesium is required for reactions involved in glycolysis and oxidative phosphorylation, helping convert carbohydrate, fat and protein from food into usable cellular energy.
This gives magnesium an important role in general vitality, physical activity and exercise, particularly when combined with adequate nutrition, hydration and other nutrients involved in energy metabolism.
Magnesium and Bone Health
A significant proportion of the body's magnesium is stored within bone.
Magnesium contributes to normal bone structure and works alongside calcium, vitamin D and vitamin K in maintaining the skeleton.
This becomes increasingly relevant with age, when preserving bone, muscle and physical function becomes an important part of maintaining independence and mobility.
Food Sources of Magnesium
Magnesium occurs naturally in many whole foods, particularly:
- Pumpkin and chia seeds
- Almonds and cashews
- Spinach and other leafy greens
- Beans and legumes
- Whole grains
- Avocado
A varied whole-food diet remains the foundation of magnesium intake, although supplementation can provide additional support where dietary intake is inadequate or nutritional requirements are greater.
Different Forms of Magnesium
Magnesium supplements come in several forms, and the compound magnesium is attached to can affect its solubility, absorption and digestive tolerance.
Magnesium bisglycinate is commonly used when good tolerance and gentle supplementation are priorities. Magnesium citrate is another well-absorbed form frequently found in general magnesium supplements.
Magnesium oxide contains a relatively high proportion of elemental magnesium but is less soluble and generally less readily absorbed than several other forms.
When comparing products, the most useful number to look for is the amount of elemental magnesium provided rather than the total weight of the magnesium compound.
How Much Magnesium Do We Need?
Daily requirements vary according to age, sex and life stage. General recommended intakes for adults are around 400–420 mg per day for men and 310–320 mg per day for women, including magnesium obtained from food.
That does not mean the entire amount needs to come from a supplement. Diet should contribute much of daily magnesium intake, with supplements used to fill nutritional gaps or provide additional support where appropriate.
High supplemental doses can cause diarrhoea, nausea or abdominal discomfort. People with impaired kidney function, those taking regular medication, or anyone who is pregnant or breastfeeding should seek professional advice before using higher-dose magnesium supplements.
Magnesium as Part of Everyday Nutrition
Magnesium supports some of the body's most fundamental systems, from muscle contraction and nerve signalling to energy production and bone structure.
Its broad role makes it particularly useful in nutritional strategies focused on muscle health, relaxation, energy, healthy ageing and mineral balance. Combined with a nutrient-rich diet and regular movement, adequate magnesium intake helps provide the foundation for many of the processes the body relies on every day.
Magnesium in O2B Products
At O2B Healthy, magnesium is available in O2B Magnesium Complex, which combines several forms of magnesium for broad nutritional support. It is also included in O2B Calci-Mag alongside calcium, zinc and vitamin D, and O2B Multi Mineral as part of a wider mineral blend. Across these formulas, magnesium supports normal muscle and nerve function, relaxation, cellular energy production, bone health, heart function and everyday mineral balance.