06/13/2026
How Magnesium Supports Mental Health
Kerry Gundlach, MS, RD, LD, IFNCP
Magnesium gets attention for its role in blood pressure control, blood sugar regulation, and heart health but magnesium also plays a key role in mental health, energy, and sleep. And suboptimal magnesium levels are not that uncommon and can show up in a variety of ways. Below is how magnesium insufficiency can show up in mental health and beyond.
Anxiety regulation
Magnesium helps regulate the chemical messengers that influence your stress response. When levels are adequate, your nervous system is better able to shift out of “fight or flight,” making it easier to feel grounded and less overwhelmed.
Depression support
Low magnesium has been linked to low mood and emotional fatigue. Because it plays a role in brain signaling and energy production, getting enough can support a more stable, resilient mood. It’s not a replacement for professional care, but it can be one helpful piece of the mental health puzzle.
Sleep quality
Magnesium helps relax both the body and the mind. It supports the neurotransmitters, serotonin and melatonin, involved in winding down, which can make it easier to fall asleep and stay asleep. When your sleep improves, your emotional regulation and stress tolerance often improve too.
Energy and mental clarity
Because magnesium is involved in turning food into energy, low levels can leave you feeling mentally foggy or physically depleted. Adequate magnesium helps support steadier energy throughout the day, which can make coping with stress or low mood feel more manageable.
Magnesium’s role beyond mental health
Magnesium supports far more than mental health — it’s involved in hundreds of essential processes throughout the body, which means signs of suboptimal levels can show up in many different ways, including:
• Muscle cramps or twitches
• Headaches or migraines
• Constipation
• Irregular heartbeat
• High blood pressure
Simple Ways to Get More Magnesium from Food
You don’t need to overhaul your entire diet to boost your magnesium intake. A few small swaps can add up quickly:
• Add a handful of pumpkin seeds/pepitas or almonds to your snacks
• Toss spinach into smoothies, soups, or eggs in the morning
• Swap white rice for brown rice or quinoa
• Add avocado to salads, tacos, eggs, or eat as a snack
• Add black beans or lentils to soups, stir-fries, tacos, salads, eggs dishes
• Nibble on 70% or higher dark chocolate
Choosing the Right Magnesium Supplement
If you’re not getting enough magnesium from food, a supplement can be a simple and effective way to fill the gap. But the supplement aisle can feel overwhelming — with so many options, how do you choose? The form of magnesium matters, and matching it to your specific goals makes a real difference. It’s always a good idea to check with a registered dietitian, but here’s a quick guide:
• For relaxation and sleep: magnesium glycinate or magnesium L-threonate
• For constipation relief: magnesium citrate or tough cases magnesium oxide
• For brain health and cognitive function: magnesium L-threonate
• For muscle function and energy: magnesium malate
• For heart health: magnesium taurate or magnesium glycinate
If you’re unsure about your magnesium needs, talk to Kerry. She’ll help you make decisions based on your symptoms, labs, dietary intake, and lifestyle factors that could be depleting magnesium.
Contact Kerry at iowacityfunctionalnutrition.com or
email: [email protected]
