MicronutrientsAnti-Stress & Well-beingNutrition

Taking magnesium and coffee together: what you should bear in mind when taking them

Two side-by-side images: one of a person sipping from a cup, and another applying lip balm, both wearing a light top and necklace.

Dr. Michael Kohlberger, BSc, MSc

06.07.20266 Reading time

Whether as a pick-me-up to start the day or the perfect accompaniment to dessert, coffee is one of the most popular drinks. In our hectic times, however, for many people it’s no longer just one cup a day. No, sometimes it’s two, three, five, eight. Well, does that sound familiar? At the same time, minerals such as magnesium are playing an increasingly important role – and not just for athletes. After all, we want to give our bodies the best possible care. But magnesium and coffee – do they go together? Is it true that coffee depletes the body’s magnesium levels? And what should you bear in mind if you want to consume both together? We have the answers.

01

Coffee: How this popular bean-based drink affects your body

The first question that springs to mind is: why do so many people reach for a coffee every day? One of the main reasons is the caffeine it contains – that little boost of energy we all crave. This comes with a number of benefits.

Coffee can:

  • alter the activity of neurotransmitters

  • stimulate the central nervous system

  • boost short-term memory

  • enhance cognitive and psychomotor functions

  • boost fat burning

  • improve athletic performance

  • lift your mood

So, after a cup of this ‘brown gold’, we feel more alert, more attentive and more focused. Ready to tackle whatever the day brings. Good coffee can also protect the body from free radicals thanks to its antioxidant compounds. Oxidative stress? It doesn’t stand a chance!

Sounds brilliant, doesn’t it? It certainly is! Studies also suggest that people who enjoy coffee every day reap further health benefits: they may even reduce their risk of having to contend with chronic conditions such as diabetes or diseases of the cardiovascular and nervous systems.

But when it comes to this much-loved brew, the motto is: “A cup or two? Great! Too much coffee – oh dear!” Because if you drink it in large quantities rather than in moderation, you could soon be suffering from headaches, a racing heart, nervousness, anxiety, sleep disturbances or stomach problems. And: coffee also affects your magnesium levels – more on that in a moment.

So how much coffee is okay? According to the EFSA (European Food Safety Authority), the safe daily intake of caffeine is 400 mg. That’s roughly four cups of coffee.

02

Magnesium: a mineral with many benefits – why your body needs it

Let’s now take a closer look at the second substance: magnesium. This mineral is vital for us humans. Countless functions and processes in your body depend on it. You need it, for example, for strong bones and teeth, balanced hormone levels, a healthy heart, stable blood pressure and to ensure that your cells can divide. What’s more, it provides energy for all your workouts, supports your sleep and helps your muscles recover. As if that weren’t enough, it plays a part in the production of the ‘happiness hormone’ serotonin. And that banishes anxiety and puts you in a good mood instead. Brilliant, isn’t it? No wonder, then, that many people now take magnesium supplements to help them perform at their best during exercise and in everyday life, to prevent cramps, to support sleep and mental wellbeing, or to compensate for a magnesium deficiency.

03

Coffee and magnesium: why caution is advised when taking them together

So how about combining the two? In other words, taking magnesium and coffee together? Is that possible? In principle, yes. Unless you have a sensitive digestive system. In that case, make sure to leave a gap of time between them to avoid the risk of diarrhoea.

04

Why, even as a coffee lover, you shouldn’t go without magnesium

What else you need to know: Caffeine has a diuretic effect – and can therefore flush valuable magnesium out of your body faster than you’d like. This can even lead to a deficiency.

With moderate consumption, you don’t need to worry about this – if you drink up to five cups a day, there is no significant risk of a magnesium deficiency. However, the more coffee you drink, the more pronounced this effect becomes. In this case, it may be a good idea to give your body an extra dose of magnesium. Don’t forget to leave a gap between doses.

Which caffeinated drinks does this also apply to?

Caffeine is not only found in coffee, but also in certain teas. For example, in green and black tea. Energy drinks, cola and chocolate may also contain this substance. You should therefore be mindful of other drinks and foods that you consume regularly, avoid combining these directly with magnesium, and never lose sight of your overall intake.

05

Other things to bear in mind when taking magnesium

Experts recommend around 400–420 mg of magnesium for men and 310–320 mg for women per day. However, if you’re a keen sports enthusiast or constantly on the go in your daily life, you may need a little more to ensure that all the organs that rely on magnesium – particularly your muscles and nervous system – function as you’d like them to.

You can generally take magnesium at any time of day – even in small doses. This minimises the risk of magnesium having a laxative effect. Also, make sure the supplement is high-quality and free from additives that you don’t need. Instead, focus on the magnesium compounds it contains, which should be ideally suited to you and your goals.

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06

Ensuring your body gets enough magnesium: key sources

However, always regard dietary supplements as nothing more than a ‘little extra’ – the basics must be right first. The foundation. And that is called a balanced diet – with a focus on magnesium-rich foods.

Above all, wholemeal products, green leafy vegetables, pulses, nuts and seeds, as well as fish and seafood should now feature on your plate. Although meat, potatoes and bananas contain slightly less magnesium, we generally eat more of them. Therefore, they too can play a part in ensuring an optimal intake.

07

Conclusion

Mix and match – that applies to all sorts of things these days. Even to the combination of coffee and magnesium. However, if you have a sensitive stomach, it may be advisable to leave a little time between consuming the two. So plan your day carefully, take your time and listen to your body! Full concentration ahead – may the power be with you!

Man with a bald head, beard and glasses, wearing a black suit, buttoning his jacket and standing in front of a plain background.

Dr. Michael Kohlberger, BSc, MSc

Expert in knowledge management & member of the research and development team, BIOGENA

Michael Kohlberger is a scientist specialising in the field of medical biology. After spending several years working in the lab, he discovered his passion for scientific communication. As a member of the BIOGENA science team, he engages critically with the current study situation and also undertakes to convey the latest knowledge regarding health research in layman’s language.

FAQs

Frequently asked questions about coffee and magnesium

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Volpe SL. Magnesium in disease prevention and overall health. Adv Nutr. 2013 May 1;4(3):378S-83S. doi: 10.3945/an.112.003483. PMID: 23674807; PMCID: PMC3650510. https://pubmed.ncbi.nlm.nih.gov/23674807/

Volpe SL. Magnesium and the Athlete. Curr Sports Med Rep. 2015 Jul-Aug;14(4):279-83. doi: 10.1249/JSR.0000000000000178. PMID: 26166051. https://pubmed.ncbi.nlm.nih.gov/26166051/

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