1. Calcium — For Strong Bones and Teeth

When you think of calcium, milk probably comes to mind.

There's a good reason for that. Calcium is best known for helping build and maintain strong bones and teeth.

But your body also needs it for muscle movement, nerve signaling, and normal blood clotting.

The good news is that calcium isn't hard to find in everyday foods, and milk isn't your only option.

Some common sources include:

• Milk, yogurt, and cheese
• Calcium-fortified plant-based milk
• Tofu made with calcium
• Canned sardines or salmon with edible bones
• Vegetables such as kale and bok choy

If dairy isn't a regular part of your diet, fortified plant-based milk and calcium-set tofu are worth considering. Just check the labels, as calcium content can vary between products.

Getting enough calcium is also worth paying attention to as you get older, particularly for women after menopause, when bone loss tends to accelerate.

2. Magnesium — For Muscles, Nerves, and Bone Health

Ever added pumpkin seeds to your oatmeal or grabbed a handful of almonds as a snack?

You're already eating foods that contain magnesium.

This mineral supports hundreds of processes in your body, including normal muscle and nerve function, protein production, and maintaining healthy bones.

And those almonds and pumpkin seeds are just the beginning. Beyond those familiar snacks, magnesium is found in a wide range of everyday foods:

• Almonds, cashews, and pumpkin seeds
• Spinach and other leafy greens
• Black beans and lentils
• Whole grains
• Some fortified breakfast cereals

With so many food sources available, getting enough magnesium can start with small choices in your everyday meals.

If you're considering a magnesium supplement, you'll find different forms, such as magnesium citrate and magnesium glycinate.

BIYODE offers magnesium supplement options. If you'd like to learn more about the different forms, take a look at our guide, What Type of Magnesium Supplement Is Perfect for Me?

Before choosing one, check the amount of elemental magnesium (the actual magnesium provided per serving), along with the form and recommended serving size. A supplement should fit your individual needs rather than simply provide the highest dose.

3. Iron — For Carrying Oxygen Around Your Body

Imagine your body as a busy city, with oxygen constantly being delivered to different neighborhoods.

Iron helps make that possible.

Your body uses iron to produce hemoglobin, a protein in red blood cells that carries oxygen from your lungs to the rest of your body.

Over time, insufficient iron can affect your body's ability to produce enough healthy red blood cells. That's one reason getting enough iron through your diet matters.

Some familiar sources include:

• Lean meat and poultry
• Fish and seafood
• Lentils and beans
• Spinach
• Iron-fortified cereals

If you get much of your iron from plant-based foods like beans and lentils, try pairing them with vitamin C-rich foods, such as bell peppers or tomatoes. Vitamin C helps your body absorb iron from plant sources more effectively.

How much iron you need also depends on your individual circumstances. People who menstruate, particularly those with heavy periods, may need to pay closer attention to their iron intake.

4. Zinc — For Immune Function and Tissue Repair

Zinc may not get as much attention as calcium or magnesium, but your body relies on it every day.

It helps your immune system function normally and plays a role in making proteins and DNA, as well as repairing tissues.

Fortunately, zinc is found in plenty of everyday foods, including oysters, beef, poultry, beans, nuts, and whole grains.

However, your body doesn't absorb zinc equally well from all foods. Zinc from animal-based sources is generally easier to absorb, while certain compounds in plant foods can reduce absorption. If you follow a vegetarian or vegan diet, eating a variety of zinc-rich foods is especially helpful.

If you're considering a zinc supplement to fill a possible gap in your diet, keep in mind that more isn't always better. Taking too much zinc over time can interfere with copper absorption, so it's worth checking the dose before adding one to your routine.

5. Potassium — For Fluid Balance and Muscle Function

Bananas have a reputation for being a potassium-rich food, but there's more to this mineral than its connection to your favorite fruit.

Your body needs potassium to maintain fluid balance, send nerve signals, and help muscles contract properly. It also plays an important role in normal heart and kidney function.

And bananas aren't your only source. Potatoes, beans, tomatoes, leafy greens, and yogurt are all everyday foods that provide potassium.

For most people, including a variety of these foods in their meals is a practical way to support their daily potassium intake.

Potassium supplements and potassium-based salt substitutes are a different story, though. They require extra caution, especially if you have kidney problems or take medications that affect potassium levels.

6. Iodine — For Normal Thyroid Function

Iodine is needed in much smaller amounts than calcium or potassium, but it has an important job.

Your thyroid gland uses iodine to make hormones that help regulate metabolism, growth, and other body functions.

Fortunately, you can get iodine from several familiar foods, including:

• Iodized table salt
• Fish and other seafood
• Dairy products
• Eggs
• Seaweed, although iodine amounts can vary considerably

One thing worth checking is the salt you use at home. Not all salt contains iodine, and sea salt or specialty salts aren't necessarily iodized.

If you rarely eat dairy or seafood and don't use iodized salt, it's worth paying attention to how much iodine you're getting from other sources.

That doesn't mean you should automatically reach for an iodine supplement, though. Getting too much iodine can also affect thyroid function, so it's important to consider your overall intake.

How to Meet Your Mineral Requirements

Getting enough minerals isn't about making every meal perfect. What matters more is your overall diet and whether you're consistently meeting your nutritional needs.

If you're concerned about a possible deficiency, don't rely on symptoms alone. A healthcare professional can help determine whether you need further evaluation or a supplement.

And if you do choose a supplement, take a moment to check the Supplement Facts label. Look at the amount per serving, the Percent Daily Value (% DV), and whether you're already getting the same mineral from another supplement. More isn't always better.

Frequently Asked Questions

What's the Difference Between Minerals and Vitamins?

Both are essential nutrients, but they're not the same. Vitamins are organic compounds, while minerals are inorganic elements. Your body needs both for normal functions, and they often work together.

Does Cooking Affect the Mineral Content of Food?

Minerals aren't destroyed by heat in the same way some vitamins can be. However, certain cooking methods, such as boiling vegetables and discarding the water, can cause some minerals to be lost into the cooking liquid.

Is It Safe to Take Mineral Supplements Every Day?

Some mineral supplements can be taken daily when appropriate, but that doesn't mean everyone needs them. Safety depends on the mineral, dose, your health, and any medications you're taking. If you're unsure whether a supplement is necessary, it's worth discussing your needs with a healthcare professional.

References

The nutritional information in this article is based on resources from the National Institutes of Health (NIH), Office of Dietary Supplements.

Calcium — Fact Sheet for Health Professionals

Magnesium — Fact Sheet for Health Professionals

Iron — Fact Sheet for Health Professionals

Zinc — Fact Sheet for Health Professionals

Potassium — Fact Sheet for Health Professionals

Iodine — Fact Sheet for Health Professionals