Nov 10, 2026

The Building Blocks of a Healthy Diet

Nutrients: The Building Blocks of a Healthy Diet

Nutrients are substances in food that the body uses to produce energy, build and repair tissues, and keep essential processes working. A varied diet can provide the nutrients most people need to support health, growth, and everyday activity.

Two Main Groups of Nutrients

Nutrients are commonly grouped into macronutrients and micronutrients. The body needs macronutrients in relatively large amounts and micronutrients in smaller amounts. Both are important.

Macronutrients

• Carbohydrates are a major source of energy. They are found in foods such as fruits, vegetables, beans, and grains. Whole grains and other fiber-rich foods also support digestive health.
• Protein provides amino acids that help build and maintain muscles and other tissues. Sources include beans, lentils, nuts, eggs, dairy products, fish, poultry, and meat.
• Fats provide energy, help the body absorb certain vitamins, and play a role in cell function. Foods such as avocados, nuts, seeds, olive oil, and oily fish contain unsaturated fats.

Micronutrients

Vitamins and minerals are micronutrients. Vitamins support a range of body functions, including metabolism and immune function. Minerals such as calcium, iron, and potassium are important for processes including bone health, oxygen transport, and fluid balance. Different foods provide different micronutrients, which is one reason variety matters.

Water Is Essential, Too

Water is not a source of calories, but it is essential for life. It helps regulate body temperature, transport nutrients, and support digestion. Fluid needs vary with factors such as activity level, climate, age, and health. Water-rich foods, including fruits and vegetables, also contribute to fluid intake.

Getting Nutrients from Food

For many people, a practical way to get a range of nutrients is to eat a variety of foods: vegetables and fruits, whole grains, protein-rich foods, and sources of calcium. Choosing minimally processed foods more often can make it easier to include fiber and a broad mix of nutrients. No single food needs to provide everything, and a healthy eating pattern can include many different cuisines and preferences.

Dietary supplements may be useful in some situations, but they do not replace a varied diet and are not necessary for everyone. Some supplements can interact with medications or be harmful in excessive amounts. A health care professional or registered dietitian can help determine whether a supplement is appropriate.

Individual Needs Differ

Nutrient needs can change with age, pregnancy, activity level, health conditions, and other circumstances. Anyone with specific dietary concerns, symptoms, or questions about supplements can seek guidance from a qualified health professional. A balanced approach focuses on overall eating patterns rather than expecting any single nutrient or food to determine health.

 

9 Tips for Getting the Nutrients Your Body Needs

1. Eat a variety of colorful fruits and vegetables.
2. Choose whole grains for fiber and B vitamins.
3. Include lean protein at meals.
4. Get calcium from dairy or fortified alternatives.
5. Choose unsaturated fats, such as those in nuts and olive oil.
6. Limit added sugars and excess sodium.
7. Drink water regularly throughout the day.
8. Read nutrition labels to compare nutrients.
9. Ask a health professional before taking supplements.

Eat a variety of colorful fruits and vegetables.

Eating a variety of colorful fruits and vegetables is a simple way to add different nutrients to your meals. Different colors often signal different natural plant compounds, while fruits and vegetables can also provide vitamins, minerals, and fiber. Try mixing leafy greens, red peppers, orange carrots, berries, and other produce throughout the week. Fresh, frozen, and canned options can all be convenient choices—just check labels for added salt or sugar.

Choose whole grains for fiber and B vitamins.

Choose whole grains such as oats, brown rice, whole-wheat bread, and quinoa to add fiber and B vitamins to your meals. Fiber supports healthy digestion, while B vitamins help the body release energy from food. Check ingredient lists for “whole grain” or “whole wheat” as the first ingredient, and swap refined grains for whole-grain options when you can.

Include lean protein at meals.

Include lean protein at meals to help your body build and maintain muscles and other tissues. Options such as beans, lentils, fish, skinless poultry, eggs, tofu, and low-fat dairy can add protein while keeping meals varied and satisfying. Pair a protein source with vegetables, whole grains, or other nourishing foods for a balanced meal.

Get calcium from dairy or fortified alternatives.

Get calcium from dairy foods such as milk, yogurt, and cheese, or choose fortified alternatives like plant-based milk. Calcium supports strong bones and teeth, and fortified products can provide a similar nutrient boost—check the label to compare calcium content.

Choose unsaturated fats, such as those in nuts and olive oil.

Choose unsaturated fats, such as those found in nuts, seeds, avocados, and olive oil, more often than saturated fats. These fats can be part of a balanced eating pattern and are easy to add to meals—for example, drizzle olive oil over vegetables or sprinkle nuts on oatmeal or a salad.

Limit added sugars and excess sodium.

Limit added sugars and excess sodium to support overall health. Added sugars can provide calories without many essential nutrients, while too much sodium may contribute to high blood pressure in some people. Check nutrition labels, compare products, and choose options with less added sugar and sodium when possible. Flavor meals with herbs, spices, citrus, or garlic, and enjoy sweetened foods and drinks in moderation.

Drink water regularly throughout the day.

Drink water regularly throughout the day to help your body stay hydrated and support everyday functions such as regulating temperature, transporting nutrients, and digestion. Keep water nearby and take sips throughout the day, especially when you’re active or in hot weather. Hydration needs vary, so use thirst and your personal circumstances as a guide.

Read nutrition labels to compare nutrients.

Read nutrition labels to compare nutrients and choose foods that fit your needs. Check serving sizes first, since the amounts listed apply to one serving, then compare items for nutrients such as fiber, protein, added sugars, sodium, and saturated fat. Comparing similar products can help you make informed choices as part of a balanced diet.

Ask a health professional before taking supplements.

Before taking a dietary supplement, ask a health professional whether it’s appropriate for you. Supplements can interact with medications, affect existing health conditions, or provide more of a nutrient than your body needs. A doctor, pharmacist, or registered dietitian can help you understand potential risks, choose a safe option, and determine whether you need a supplement at all.

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