10 Best Sources of Protein for a Healthy Diet

10 nutritious protein sources that can be part of a balanced and varied diet

Protein is an essential nutrient that your body needs every day. It helps build and repair tissues and is involved in the production of enzymes, hormones, and other important substances. Protein can come from both plant and animal foods, making it easy to include in a varied and balanced diet.

But which foods are the best sources of protein?

From eggs and fish to lentils, beans, yogurt, and nuts, there are many nutritious options to choose from. In this article, we'll explore 10 healthy sources of protein and simple ways to add them to your everyday meals.

What Is Protein?

Protein provides amino acids that the body uses to build and maintain tissues

Protein is one of the three main macronutrients, along with carbohydrates and fats.

Your body breaks dietary protein down into amino acids. These amino acids are used to build and maintain muscles, skin, bones, enzymes, hormones, and other structures and substances in the body.

Some amino acids are essential, meaning your body cannot make enough of them and they need to come from food.

Protein is found in a wide variety of foods, including meat, fish, eggs, milk, yogurt, beans, lentils, nuts, seeds, soy foods, and whole grains.

 

Why Is Protein Important?

Protein plays several important roles in the body.

It helps:

• Build and repair body tissues
• Maintain muscle and other tissues
• Produce enzymes and hormones
• Support normal growth and development
• Provide amino acids needed by the body
• Contribute to a balanced and nutritious diet

Protein should not be considered separately from the rest of your diet. The foods that provide protein also contain other nutrients such as fiber, healthy fats, vitamins, minerals, and sodium. Harvard's Nutrition Source describes this as the "protein package."

For more information, read our previous article: Why Is Protein Important for Your Body?

10 Best Sources of Protein

1. Eggs

Eggs are a convenient and versatile source of protein. They can be prepared in many different ways and are easy to include in breakfast, lunch, or dinner.

Eggs also provide several vitamins and minerals, including vitamin B12, selenium, and choline.

Easy ways to eat eggs:

• Boiled eggs with whole-grain toast
• Scrambled eggs with vegetables
• Omelets with spinach and other vegetables
• Eggs added to salads
• Eggs served with beans and whole grains

Eggs can be part of a balanced diet when combined with other nutritious foods.

 

2. Fish

Fish is another excellent source of protein. Some fish, particularly fatty fish such as salmon and sardines, also provide omega-3 fatty acids.

Fish can be prepared in many simple ways, including baking, grilling, steaming, or cooking with vegetables.

Try adding fish to:

• Rice and vegetable meals
• Salads
• Whole-grain sandwiches
• Soups
• Grilled vegetable plates

Choosing a variety of fish can help add different nutrients to your diet.

 

3. Chicken

Chicken is a popular protein-rich food and can be used in many different meals.

Skinless chicken can be prepared by grilling, baking, roasting, or cooking in a healthy stew. The way chicken is prepared matters because deep-frying and heavily processed chicken products can add significant amounts of fat and sodium.

Healthy meal ideas include:

Eggs, fish, and chicken are versatile animal-based protein foods

• Grilled chicken with vegetables
• Chicken and brown rice
• Chicken salad
• Chicken and vegetable soup
• Chicken wraps with vegetables

 

4. Lentils

Lentils are one of the most useful plant-based sources of protein.

They are also naturally rich in dietary fiber, making them a nutritious addition to a balanced diet. Harvard's protein information lists a cup of cooked lentils as providing about 18 grams of protein and 15 grams of fiber.

Lentils are especially useful for people who want to include more plant-based foods in their diet.

You can use lentils in:

• Dal
• Soups
• Curries
• Salads
• Grain bowls

Lentils are also affordable and widely available, making them a practical protein choice for many families.

 

5. Beans and Chickpeas

Beans and chickpeas provide protein, fiber, vitamins, and minerals.

Lentils, beans, and chickpeas provide plant-based protein and dietary fiber

Examples include:

• Kidney beans
• Black beans
• Chickpeas
• Pinto beans
• White beans
• Mung beans

These foods can be used in traditional dishes as well as salads, soups, wraps, and grain bowls.

For example, chickpeas can be added to a salad, while kidney beans can be combined with rice and vegetables for a filling meal.

WHO includes legumes such as lentils and beans among the foods that can form part of a healthy and varied diet.

 

6. Yogurt

Yogurt is a convenient source of protein and can also provide calcium and other nutrients.

Greek yogurt is often particularly high in protein, although the amount varies between products.

For a nutritious snack, try plain yogurt with:

• Fresh fruit
• Oats
• Nuts
• Seeds
• Berries

When purchasing flavored yogurt, check the nutrition label because some products contain significant amounts of added sugar.

 

7. Milk

Milk provides protein as well as nutrients such as calcium and vitamin B12.

It can be consumed as a drink or used as an ingredient in other foods.

Yogurt and milk provide protein along with important nutrients such as calcium

You can add milk to:

• Oatmeal
• Smoothies
• Whole-grain cereal
• Tea or coffee
• Homemade soups

If you prefer plant-based milk alternatives, check the nutrition label because protein content can vary considerably between products.

 

Nuts, seeds, and tofu are versatile plant-based foods that can contribute protein to a balanced diet

8. Nuts and Seeds

Nuts and seeds are nutritious plant foods that provide protein along with healthy fats, fiber, vitamins, and minerals.

Good choices include:

• Almonds
• Peanuts
• Walnuts
• Pistachios
• Pumpkin seeds
• Sunflower seeds
• Chia seeds
• Flaxseeds

A small serving can be added to yogurt, oatmeal, salads, or smoothies.

Because nuts and seeds are energy-dense, portion size is worth keeping in mind.

Harvard recommends nuts and seeds as part of a varied approach to choosing healthy protein foods.

 

9. Tofu and Other Soy Foods

Tofu is a versatile plant-based source of protein made from soybeans.

Other soy foods include tempeh and edamame.

Tofu can absorb the flavors of herbs, spices, sauces, and vegetables, making it suitable for many different meals.

Try tofu:

• Stir-fried with vegetables
• Added to soups
• Baked with herbs and spices
• Served with rice
• Added to noodle dishes

Soy foods can be a useful option for people who want to include more plant-based protein in their diet.

 

Oats and whole grains can contribute protein, fiber, and other nutrients to a balanced diet

10. Oats and Whole Grains

Oats and other whole grains are not usually as protein-rich per serving as foods such as fish, eggs, or legumes, but they can still contribute protein to your daily diet.

Whole grains also provide carbohydrates, fiber, vitamins, minerals, and other nutrients.

Examples include:

• Oats
• Brown rice
• Whole-wheat bread
• Quinoa
• Barley
• Buckwheat

One simple way to create a more protein-rich breakfast is to combine oats with milk or yogurt, nuts, seeds, and fruit.

 

Animal vs. Plant Sources of Protein

Protein can come from a wide variety of both plant and animal foods

Protein can come from both animal and plant foods.

Animal protein sources include:

• Eggs
• Fish
• Chicken
• Milk
• Yogurt

Plant protein sources include:

• Lentils
• Beans
• Chickpeas
• Tofu
• Nuts
• Seeds
• Whole grains

Both groups can contribute to a healthy diet.

WHO recommends a varied diet containing different food groups, including legumes, whole grains, vegetables, fruits, and animal-source foods where appropriate.

For many people, increasing the variety of plant-based protein foods can also be a practical way to improve dietary diversity.

 

How Much Protein Do You Need?

Protein requirements vary from person to person.

Factors such as age, body size, physical activity, growth, and overall health can influence how much protein someone needs.

WHO notes that protein needs are generally met through a varied diet and that protein can come from a combination of animal and plant sources.

Rather than focusing only on getting as much protein as possible, it is useful to consider the overall quality and variety of your diet.

If you have a specific medical condition or unusual nutritional needs, speak with a qualified healthcare professional or registered dietitian about your individual protein requirements.

 

How to Add More Protein to Your Meals?

You don't necessarily need to completely change your diet to include more protein.

Try these simple ideas:

At breakfast

Have eggs, yogurt, milk, or oatmeal topped with nuts and seeds.

At lunch

Add lentils, beans, chicken, fish, or tofu to your meal.

At dinner

Combine a protein-rich food with vegetables and a whole-grain or other nutritious carbohydrate source.

For snacks

Try yogurt, nuts, seeds, boiled eggs, or roasted chickpeas.

The goal is not simply to add protein to everything. Instead, build meals around a variety of nutritious foods.

 

What Makes a Protein Food a Healthy Choice?

Protein content is only one part of the picture.

When choosing protein foods, consider what else comes with the food.

For example, some protein-rich foods can also contain high amounts of saturated fat or sodium, while others provide fiber and beneficial unsaturated fats.

Harvard recommends paying attention to the overall protein package, rather than looking only at grams of protein.

When possible, choose minimally processed foods and vary your protein sources.

Good options include:

• Fish
• Poultry
• Beans
• Lentils
• Nuts
• Seeds
• Soy foods
• Eggs
• Yogurt

WHO similarly emphasizes variety, balance, moderation, and diversity as key principles of a healthy diet.

 

Can Vegetarians Get Enough Protein?

Yes. A varied vegetarian diet can provide protein through foods such as:

• Lentils
• Beans
• Chickpeas
• Tofu
• Soy foods
• Yogurt
• Milk
• Eggs
• Nuts
• Seeds
• Whole grains

People following vegetarian or vegan diets can combine a variety of plant protein foods throughout the day to obtain the amino acids they need.

The important point is variety, rather than depending on one single food.

 

10 Protein Foods at a Glance

Protein Food	Type	Simple Meal Idea
Eggs	Animal	Eggs with vegetables
Fish	Animal	Grilled fish with vegetables
Chicken	Animal	Chicken and brown rice
Lentils	Plant	Lentil dal
Beans	Plant	Beans with rice
Yogurt	Animal	Yogurt with fruit and nuts
Milk	Animal	Milk with oats
Nuts & seeds	Plant	Nuts with yogurt
Tofu	Plant	Tofu stir-fry
Oats & whole grains	Plant	Oatmeal with milk and seeds

 

Frequently Asked Questions

What are the best sources of protein?

Healthy protein sources include eggs, fish, chicken, lentils, beans, yogurt, milk, nuts, seeds, tofu, and other soy foods. Choosing a variety of protein foods can provide different nutrients.

What are the best plant-based sources of protein?

Lentils, beans, chickpeas, tofu, soy foods, nuts, seeds, and whole grains are useful plant-based sources of protein.

Are eggs a good source of protein?

Yes. Eggs provide protein along with several vitamins and minerals and can be included in a balanced diet.

Is fish a healthy protein source?

Fish provides protein, and some varieties such as salmon and sardines also provide omega-3 fatty acids.

Can I get protein without eating meat?

Yes. Lentils, beans, chickpeas, tofu, soy foods, nuts, seeds, dairy products, eggs, and whole grains can all contribute protein.

Are nuts high in protein?

Nuts contain protein as well as healthy fats, fiber, vitamins, and minerals. They can be a nutritious addition to meals and snacks.

Do I need protein at every meal?

Individual nutritional needs vary. Including a protein-rich food in meals can be a practical way to create balanced meals, but there is no single meal pattern that works for everyone.

 

Final Thoughts

Protein is an essential part of a healthy and balanced diet, but there is no need to rely on just one source.

Eggs, fish, chicken, lentils, beans, yogurt, milk, nuts, seeds, tofu, and whole grains can all contribute to your daily protein intake.

The most useful approach is to choose a variety of nutritious foods and consider the complete nutritional package of each food—not just its protein content.

Plant-based foods such as legumes, nuts, seeds, soy foods, and whole grains can be valuable choices, while fish, eggs, poultry, and dairy can also provide important nutrients. WHO emphasizes variety and balance as fundamental principles of a healthy diet.

A balanced diet is about variety, moderation, and consistency, not simply maximizing one nutrient.

 

Sources

• World Health Organization (WHO) — Healthy Diet
• World Health Organization — Healthy Diet: Keys to Eating Well
• Harvard T.H. Chan School of Public Health — The Nutrition Source: Protein
• Harvard T.H. Chan School of Public Health — Choosing Healthy Protein Foods
• WHO & FAO — What Are Healthy Diets?