Miami's Magnesium Paradox: Are Ocean Breezes Fooling You?

By Franklin Everett Shaw

March 1, 2026

Are you feeling sluggish, even with the Miami sunshine beaming down? Do your muscles cramp after a light jog on South Beach? The culprit might be a magnesium deficiency, a surprisingly common issue even for those of us living practically in the ocean.

It seems counterintuitive, right? We’re surrounded by saltwater, a natural source of magnesium. Yet, many Miami residents are unknowingly deficient. Let’s dive into why this is happening and, more importantly, what you can do about it.

The first problem lies in our tap water. Miami-Dade Water and Sewer Department works hard to provide safe drinking water. However, the treatment process often removes minerals, including magnesium, to meet safety standards.

Think about it: the very process designed to protect us inadvertently strips away a vital nutrient. This isn’t a conspiracy; it’s a trade-off between purity and mineral content.

Next, consider the typical Miami diet. While we boast a vibrant culinary scene, many residents rely on processed foods. These foods are notoriously low in magnesium and high in sodium, which can further deplete magnesium levels.

Grab a cafecito and a pastelito from Versailles? Delicious, but not exactly a magnesium powerhouse. Ordering takeout from a chain restaurant on Calle Ocho? Convenient, but likely lacking in essential nutrients.

Air conditioning, a necessity in Miami’s sweltering climate, also plays a role. Constant air conditioning leads to increased sweating, even if you don’t feel particularly active. Sweat contains electrolytes, including magnesium, which are lost as we cool down.

Imagine spending your days in an air-conditioned office, then retreating to your air-conditioned apartment. You’re constantly losing magnesium through sweat, exacerbating the deficiency.

So, how do you know if you’re magnesium deficient? The symptoms can be subtle and easily mistaken for other conditions.

Here’s a Floridian-specific guide to recognizing magnesium deficiency:

Muscle cramps, especially in your legs and feet: Those late-night charley horses after a day at the beach? Could be magnesium.
Fatigue and low energy: Feeling constantly tired, even after a full night’s sleep? Magnesium plays a crucial role in energy production.
Irritability and anxiety: Feeling more stressed and anxious than usual? Magnesium helps regulate mood.
Headaches: Frequent headaches, especially tension headaches, can be a sign of deficiency.
Heart palpitations: Feeling like your heart is skipping a beat or racing? Magnesium is essential for heart health.
Numbness or tingling in your extremities: This can be a sign of nerve damage caused by magnesium deficiency.

Now, let’s get to the actionable steps you can take to increase your magnesium intake.

First, focus on dietary sources. Incorporate magnesium-rich foods into your diet.

Here are some excellent choices readily available in South Florida:

Dark leafy greens: Spinach, kale, and collard greens are packed with magnesium. Try adding them to your salads or smoothies.
Nuts and seeds: Almonds, cashews, pumpkin seeds, and chia seeds are all good sources. Snack on them throughout the day.
Avocados: A Miami staple! Avocados are not only delicious but also rich in magnesium.
Beans and lentils: Black beans, kidney beans, and lentils are excellent sources of magnesium and fiber.
Dark chocolate: Yes, you can indulge! Choose dark chocolate with a high cocoa content (70% or higher) for a magnesium boost.
Seafood: Certain types of fish, like salmon and mackerel, contain magnesium.

Next, consider magnesium supplementation. Not all supplements are created equal.

Magnesium oxide is the cheapest and most common form, but it’s poorly absorbed by the body. Avoid it.

Magnesium citrate is a more bioavailable form, but it can have a laxative effect. Start with a low dose and gradually increase it as needed.

Magnesium glycinate is a well-tolerated form that’s less likely to cause digestive issues. It’s often recommended for people with sensitive stomachs.

Magnesium threonate is a newer form that may be particularly beneficial for brain health.

You can find these supplements at most pharmacies and health food stores in Miami, from CVS on South Dixie Highway to Whole Foods Market in Coral Gables.

Here’s a step-by-step guide to choosing and using magnesium supplements:

Consult with your doctor: Before starting any new supplement, talk to your doctor to rule out any underlying medical conditions and ensure it won’t interact with any medications you’re taking.
Choose the right form: Based on your individual needs and sensitivities, select a magnesium supplement that’s well-absorbed and well-tolerated.
Start with a low dose: Begin with a low dose (e.g., 100-200 mg per day) and gradually increase it as needed.
Take it with food: Taking magnesium supplements with food can help improve absorption and reduce the risk of digestive upset.
Monitor your symptoms: Pay attention to how you feel and adjust your dosage accordingly.

Finally, consider using a magnesium oil spray or taking Epsom salt baths. These topical applications can help you absorb magnesium through your skin.

Epsom salt baths are readily available at most drugstores in Miami. Just add a cup or two to your bathwater and soak for 20-30 minutes.

Magnesium oil sprays can be found online or at health food stores. Simply spray it on your skin and massage it in.

A common mistake is to assume that because you live near the ocean, you’re automatically getting enough magnesium. This is simply not true.

Another pitfall is relying solely on supplements without addressing your diet and lifestyle. Supplements are meant to supplement a healthy diet, not replace it.

Don’t fall into the trap of thinking that all magnesium supplements are the same. Choose a high-quality, bioavailable form for optimal absorption.

By understanding the factors that contribute to magnesium deficiency in Miami and taking proactive steps to increase your intake, you can improve your overall health and well-being. Don’t let the sunshine fool you; take care of your magnesium levels!