The recommended daily intake of magnesium varies slightly by age and gender, but according to the NHS and U.S. dietary guidelines:
- Adult men should get around 300 mg per day
- Adult women should aim for about 270 mg per day
That’s not difficult to achieve through a balanced diet. Magnesium is naturally found in:
- Almonds, cashews, and peanuts
- Spinach and kale
- Whole grains like brown rice and oats
- Black beans and lentils
- Avocados and bananas
Health authorities caution against taking more than 400 mg a day from supplements, as higher doses can cause health complications, especially over time.
If you’re concerned about magnesium levels, it’s always better to get tested before starting any supplement. A simple blood test can determine whether you truly need extra magnesium or if your diet is already meeting your body’s needs.
The Social Media Supplement Trap
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One of the biggest reasons for the rise in supplement-related health issues comes from viral trends on social media.
Each week seems to bring a new “miracle supplement” — one month it’s potassium, the next it’s zinc, then magnesium or collagen. These trends often spread faster than scientific research can catch up.
The problem, according to physicians, is that online health influencers rarely consider individual health conditions. What’s good for one person can be dangerous for another.
Dr. Nassar warns that supplements should never replace professional guidance:
“Magnesium has benefits, yes — but context matters. Your age, medications, and underlying health conditions all determine whether it’s helpful or harmful.”
That’s especially important for older adults, who often take medications that can interact with supplements in unpredictable ways.
When to Talk to Your Doctor
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