Vitamins, Minerals, and Multivitamins: A Simple Guide to Micronutrients

Micronutrients are the vitamins and minerals we need to support our health and well-being, but there’s more to their story. What’s the difference between micronutrients vs. macronutrients? Are all vitamins the same? Do you need a multivitamin? We’re exploring these questions and more.

Micronutrients vs. Macronutrients: What’s the Difference?

All nutrients are important, but it’s helpful to understand some of their differences when thinking about your overall diet and what it provides.

First, what’s the difference between micronutrients vs. macronutrients? As I covered in more detail in this blog post on macronutrients, the latter includes the big three: protein, fats, and carbohydrates. These are called “macro” nutrients because we need them in large amounts to support energy, growth, repair, and overall function.

On the other hand, micronutrients include vitamins, minerals, and antioxidants. They’re equally as critical for supporting metabolism, immune function, bone health, and many other physiological processes, but we don’t need them in nearly as large quantities (hence, the “micro” in their name).

Both macronutrients and micronutrients work together for the good of your health. Macros give your body fuel, and micros help that fuel be used cleanly and efficiently. The best way to get a balance of both is to eat a healthy diet based on a variety of nutrient-dense foods. 

Types of Micronutrients: Vitamins and Minerals

So, what is the difference between vitamins and minerals? Both are micronutrients, needed in small quantities, but they have unique properties. Vitamins are organic compounds, meaning they can be broken down by air, heat, and acid. In contrast, minerals are inorganic elements that retain their chemical structure. 

Micronutrients can be further categorized as:

• Fat-soluble vitamins. Vitamins A, D, E, and K are stored in your fatty tissues and liver; therefore, they don’t need to be replenished as frequently as other vitamins. 
• Water-soluble vitamins. These include vitamin C and the B vitamins, which dissolve in water and are excreted from your body after it uses what it needs. It’s important to consume water-soluble vitamins frequently since they’re not stored for later use.
• Macrominerals. These minerals are needed in larger quantities (at least 100 mg per day) and include calcium, phosphorus, sodium, magnesium, potassium, chloride, and sulfur.
• Trace minerals. These minerals are needed in smaller quantities (less than 100 mg per day) and include iron, zinc, copper, manganese, iodine, selenium, fluoride, chromium, and molybdenum.

Most people don’t need to be meticulously tracking micronutrient intake. As long as you’re eating an array of healthy foods, you can generally rest assured that micronutrients are hard at work fostering your growth and development, making DNA, enzymes, and hormones, protecting your cells from damage, and supporting healthy metabolism.

Do You Need a Multivitamin?

Many people take a daily multivitamin, but do you need one? Are multivitamins good for you? It depends. 

Multivitamins provide various vitamins and minerals, often including vitamin D, B12, folate, iron, calcium, and magnesium. Some even contain omega-3s (DHA and/or EPA), antioxidants, or herbs, to help reduce the need for additional supplements in your routine. 

A multivitamin is a supplement designed to help fill in nutritional gaps, but that doesn’t mean everyone necessarily needs one. 

Certain people may want to consider adding a multivitamin, such as: 

• Pregnant women (who need extra folate, iodine, and iron)
• Elderly individuals (who may have reduced absorption of vitamin B12 or vitamin D)
• Plant-based eaters (who need to pay extra attention to vitamin B12 and may benefit from supplemental vitamin D, iron, or iodine)
• People who have existing medical or malabsorptive conditions may benefit from extra micronutrients

The main benefit of taking a daily multivitamin is that it’s a convenient option if you’re seeking some sort of nutritional insurance. However, multivitamins also come with downsides, such as giving a false sense of security. After all, supplements can’t replace a healthy diet.

Whenever possible, choose a multivitamin that bears a third-party testing certification seal, such as from NSF International, USP, or ConsumerLab. This indicates the product has been independently tested for purity, quality, and safety and contains what it says it does, reducing the risk of oversupplementing or ingesting harmful compounds. 

If you’re wondering whether a multivitamin makes sense for you, it’s best to consult with a trusted healthcare provider for personalized recommendations. 

How to Get Micronutrients From Food

To meet your micronutrient (and macronutrient) needs, I always recommend taking a foods-first approach. Eating plenty of fruits, vegetables, whole grains, legumes (beans, peas, and lentils), nuts, seeds, and lean proteins will ensure you’re getting the protein, fats, fiber, vitamins, minerals, and antioxidants necessary for health. 

It’s also important to understand the concept of bioavailability, which is how well your body can absorb and use the nutrients you consume from food. Eating a variety of different foods, prepared in different ways, and combining nutrients can all help.

For example, vitamin C foods (like strawberries and peppers) can boost the bioavailability of iron from plant sources (like spinach or lentils). On the other hand, some nutrients can compete with one another, such as calcium inhibiting iron when consumed at the same time.

Signs You May Be Missing Micronutrients

It’s not always obvious when you’re developing a micronutrient deficiency, as symptoms can take time to develop. However, here are some things to look for if you’re concerned that your diet is inadequate in certain vitamins and minerals: 

• Ongoing fatigue for no reason
• Changes to your nails, such as brittleness or ridges
• Getting sick more often than usual
• Changes to your hair, such as thinning or dryness
• Your cuts, scrapes, and bruises are taking longer to heal
• Irritability or mood changes
• Tingling sensations in your hands or feet
• Brain fog
• Unusual cravings, like for ice or dirt

If you think you may be lacking in certain micronutrients, consult your healthcare provider, who can help identify potential signs and make recommendations. 

Micronutrient Takeaways

Micronutrients may be small, but they play substantial roles in your health. The best way to ensure you’re meeting your vitamin and mineral needs is to eat plenty of different types of whole and minimally processed foods. Some people may benefit from a multivitamin as well. If you’re concerned about the nutritional quality of your diet or need help choosing a complementary supplement, I can help.

If you’re interested in exploring how we can work together, click here to schedule a free 15-minute discovery call.