Skip to content



What’s in my supplement cupboard – Magnesium

One of the reasons we don’t talk much about supplements is that it’s too easy to think you are “on it”, just by purchasing and taking a supplement. It creates a false sense of progress.

It’s easy to go on Amazon and buy some fish oil. Whereas monitoring and adjusting calories and macros takes time, effort, knowledge, commitment, discipline and diligence.

And guess which is responsible for 99.9% of results…(it ain’t fish oil!).

That said, if you approach it with the right mindset, there are some decent supplements that can help you along the way.

Let’s take a look at one of them – magnesium.


Magnesium deficiencies are common in the western diet because grains are poor sources of magnesium. Other prominent sources of magnesium, like nuts and leafy vegetables, are not eaten as often. It is possible to fix a magnesium deficiency through dietary changes.

Benefits of magnesium

  • Has been found to help reduce muscle soreness and speed up recovery
  • Relaxes your nerves and muscles
  • Builds and strengthen bones, working with Calcium and other essential minerals
  • Keeps your blood circulating smoothly
  • Plays a role in prevention of osteoporosis

Types of magnesium 

There are two basic categories of Magnesium, Oxides and Chelates, within each of these categories there are several branches so just think of it this way, Magnesium’s ending in “ide” and “ate.”

Oxides are cheaper to buy but far more difficult for the body to break down and can cause stomach discomfort and act more as a laxative as that is how unused Magnesium is passed.

Chelates are a more bioavailable form and the preferred Magnesium for supplementation. Look for “magnesium citrate” or “magnesium chelate”.

How much Magnesium do I need? 

The amount of magnesium you need is: • 300mg a day for men (19-64 years) • 270mg a day for women (19-64 years)

You should be able to get all the magnesium you need from your daily diet.

If you take magnesium supplements, don’t take too much as this could be harmful.

What happens if I have too much Magnesium?

Toxicity of Magnesium from food sources is not a health risk but too much Magnesium from artificial sources, like supplements, can be a problem and may lead to diarrhoea and stomach cramping. Make sure you stay within the upper limits of the RDA.

Having 400mg or less a day of magnesium from supplements is unlikely to cause any harm.

What happens if I don’t get enough Magnesium?

If you are deficient in Mg, you may experience symptoms of decreased appetite, nausea, vomiting, fatigue, and weakness. As magnesium deficiency worsens, numbness, tingling, muscle contractions and cramps may occur.

Deficiency is normally caused by people not eating enough Magnesium containing foods, that is a diet high in processed, man-made foods because minerals are destroyed during processing. People with digestive problems and gut inflammation will have lower body Mg because they aren’t able to absorb as much.

Can you get Magnesium naturally from foods?

Natural food sources of magnesium include:

  • Green, leafy vegetables, like spinach
  • Nuts
  • Beans, peas, and soybeans
  • Whole-grain cereals

Eating whole foods is always best. Magnesium can be lost during refinement and processing.

When to take Magnesium 

Magnesium is typically non-stimulatory. If deficient, high acute doses of supplemental magnesium can be slightly sedative. So before bed is best.

Article Sources

Dan Sroda
Personal Trainer at Reach Personal Training
Dan Sroda is a Personal Trainer based in Birstall, serving Leeds and Bradford.

As the owner and lead trainer at Reach Personal Training, I am responsible for the philosophy of the business and overseeing client programmes.

My mission is for Reach Personal Training to be synonymous with a long-term, real-life approach to health and fitness. We help our clients to integrate health and fitness into their busy lives. We don't do fads. We don't do crash diets. We do "Fitness For Life".

I have a family. I’ve always worked (and not always in the fitness industry). I have housework and shopping to do. I have a REAL life. So I know what it takes to balance a real life with a sustainable approach to health and fitness.

If I can do it then anyone else can too. All you need is the desire to make eating healthily and keeping fit a priority in your life. An hour a day, thirty minutes a day, even fifteen minutes a day of exercise, supported with a healthy diet based on whole foods, is all it takes to make steady long-term progress towards looking and feeling fantastic.

I have a few simple values upon which I have built Reach Personal Training. Only personal trainers who share these values will be part of our team.

- Friendliness. Just be a genuinely nice person, it's dead simple and it's the best way to live. Smile as much as possible and try to see the best in every situation.

- No fads. No pseudoscience. My background in academia makes me question everything. There is so much nonsense in the fitness industry, mainly because some people are in it to make money so they'll believe anything and questioning it will mean they can't believe in the product. We are different. We do what works. We use science to create our programmes and we never put profit over effectiveness. You will NEVER find Herbalife or Forever Living in our studio!


The Reach Personal Training approach to health and fitness is no-nonsense but fun, friendly and motivating. We don’t do short-cuts or fad diets. Our FAT LOSS and BODY TONING training programmes are based on science and common-sense and they get long-lasting results.

If you hate the thought of drifting aimlessly from machine to machine around a commercial gym, with Jeremy Kyle on the TV, then get in touch today to enquire about our Private Personal Training & Group PT packages


Unit 9, Carr Mills, Business Park, 919 Bradford Rd, Birstall, Batley WF17 9JY