Types of Vitamins and Nutrients

What Is Magnesium?

Magnesium is an important part of the more than 300 enzymes found in your body. These enzymes are involved in processes that help to regulate many bodily functions, including the production of energy, body protein and muscle contractions. Magnesium also plays a role in maintaining healthy bones and a healthy heart.

Learn about the vitamins and nutrients that are essential to a healthful eating.

More on This Topic

  • Types of Vitamins and Nutrients

    Eat Your Spinach

    Spinach is packed with powerful nutrients and is an excellent source of folate, vitamin A, iron and vitamin K. Read More

  • Types of Vitamins and Nutrients

    What Are B-Vitamins and Folate?

    Wendy Marcason, RDN

    The most common B-vitamins are essential for supporting your body's metabolism rate, producing energy and aiding your body in fighting disease and infection. Read More

  • Types of Vitamins and Nutrients

    Iodine, a Critically Important Nutrient

    Kathleen Zelman, MPH, RD, LD

    An essential mineral, iodine is used by the thyroid gland to make thyroid hormones that control many functions in the body including growth and development. Read More

  • Types of Vitamins and Nutrients

    What Is Vitamin D?

    Jill Kohn, MS, RDN, LDN

    Vitamin D is a nutrient needed for health and to maintain strong bones. And, together with calcium, it helps protect against the loss of bone mass. Read More

  • Types of Vitamins and Nutrients

    What are Omega-3 Fatty Acids?

    Sharon Denny, MS, RDN

    Research shows that eating two 4-ounce servings of seafood per week reduces the risk of heart disease and related deaths. But, omega-3s are not limited to fish. Read More

  • Types of Vitamins and Nutrients

    Do Kids Need Omega-3 Fats?

    In recent years, omega-3 fatty acids have become something of a nutrition star. But what are they and what can they do for a growing child's body? Read More

  • Nutrient-Rich Foods

    Vitamin D Deficiency in Kids

    Vitamin D deficiency can lead to rickets or defective bone growth. Make sure your child is getting enough vitamin D each day by including milk with most meals. Read More

  • Types of Vitamins and Nutrients

    Antioxidants - Protecting Healthy Cells

    Wendy Marcason, RDN

    Antioxidants — such as vitamins C and E and carotenoids, which include beta-carotene, lycopene and lutein — help protect healthy cells from damage caused by free radicals. Read More

  • Vegetarian and Special Diets

    Vegetarian Sources of Protein

    Rachel Begun, MS, RDN

    Not only is it possible to get enough protein from plant sources, there are other nutrition benefits of eating plant-based foods. Read More

  • Types of Vitamins and Nutrients

    The Roles of Vitamin A

    Marisa Moore, MBA, RDN, LD

    Vitamin A is a fat-soluble vitamin that plays a role in immunity, the body's development and maintenance of major organs. Available in two sources, vitamin A is derived from animals and from plants. Read More

  • Types of Vitamins and Nutrients

    What Is Phosphorus?

    Marisa Moore, MBA, RDN, LD

    While it doesn't get as much attention as calcium, phosphorus plays an important role. It's a building block for bones and teeth and is a key nutrient in helping the body use and store energy. Read More

  • Dietary Guidelines and MyPlate

    Iron and Your Teen

    Poor food choices or restricting food to lose weight are two common reasons many teens don't consume enough iron when they need it the most. Read More

  • Tips for Weight Loss

    Want to Get Lean? Eat Fat!

    Susan Moores, MS, RD

    "Fat" used to be a bad word when it came to eating well. But times have changed. If you want a lean, mean, fighting-machine body, best to put some fat on your plate. Read More

  • Types of Vitamins and Nutrients

    Vitamins and Nutrients

    Eat a variety of nutrient-rich foods to give your body the nutrition it needs every day to help protect against illness and reduce your risk of chronic disease. Read More

  • Types of Vitamins and Nutrients

    Vitamin Needs of Athletes

    Sharon Denny, MS, RDN

    Although some research suggests the high activity levels of athletes may increase their vitamin needs, at present, there are not specific vitamin recommendations specific to athletes. Here's a view of the role vitamins play. Read More