Non-meat protein refers to protein sources that do not come from animal products. With the increasing popularity of plant-based diets and the growing concern about the environmental impact of meat consumption, non-meat protein has gained significant attention. In this article, we will explore the definition and importance of non-meat protein, the various types of non-meat protein sources available, and how they compare to meat protein. we will discuss how to incorporate non-meat protein into your diet and address potential challenges and concerns that may arise.
Understanding non-meat protein is essential for individuals seeking to adopt a plant-based lifestyle or reduce their meat intake for various reasons. Choosing non-meat protein offers health benefits such as reducing the risk of chronic diseases and improving overall well-being. It also has a lower environmental impact, making it a sustainable choice. We will delve into the different types of non-meat protein sources, including plant-based options, dairy and egg alternatives, as well as emerging alternatives like insects and algae. Comparing non-meat protein to meat protein, we will analyze their nutritional profiles, digestibility, and environmental impact. Incorporating non-meat protein into your diet can be done through delicious plant-based recipes, combining protein sources for complete nutrition, and transitioning gradually with helpful tips. Finally, we will address potential challenges and concerns such as meeting protein needs without meat, addressing nutrient deficiencies, and adapting to taste and texture preferences. By understanding the world of non-meat protein, individuals can make informed choices about their dietary habits while promoting their own health and the well-being of the planet.
Key takeaway:
- Non-meat protein offers health benefits: Choosing non-meat protein sources can provide numerous health benefits, including improved heart health, weight management, and reduced risk of chronic diseases.
- Non-meat protein is environmentally-friendly: Opting for non-meat protein helps reduce greenhouse gas emissions and conserves resources such as land and water, making it a more sustainable choice.
- Various types of non-meat protein: Non-meat protein can be obtained from plant-based sources, dairy and eggs, as well as alternative protein sources, offering a wide range of options for individuals with diverse dietary preferences and restrictions.
What is Non-Meat Protein?
Non-meat protein refers to protein sources that do not come from animal products. So, what is non-meat protein? These alternatives, such as beans, lentils, tofu, tempeh, quinoa, nuts, and seeds, can provide essential amino acids necessary for the body’s growth and maintenance. Rich in nutrients, these protein sources can be incorporated into various dishes such as salads, stir-fries, and soups. One of the advantages of non-meat protein is that it is often lower in saturated fat and cholesterol compared to meat. This makes it an excellent choice for vegetarians, vegans, or those looking to reduce their meat consumption. To meet daily protein requirements, it is crucial to ensure a balanced intake of different non-meat protein sources. By experimenting with different recipes and flavors, incorporating non-meat protein into meals can become enjoyable and satisfying. Moreover, besides diversifying your nutrient intake, incorporating these plant-based protein sources into your diet also has beneficial effects on environmental sustainability. So, what is non-meat protein? Making conscious choices and understanding its benefits can contribute to a well-rounded, nutritious diet. Read more about non meat protein.
Why Choose Non-Meat Protein?
Looking to amp up your protein intake without relying on meat? Dive into the world of non-meat protein and discover the compelling reasons to make the switch. From the health benefits that non-meat protein brings to the table, to the environmental considerations it presents, this section sheds light on why opting for non-meat protein sources might just be the game-changer you’ve been searching for. Say goodbye to meat and hello to a greener, healthier protein alternative. Are you ready to learn more? Let’s dive in!
Health Benefits of Non-Meat Protein
The health benefits of non-meat protein are abundant and can contribute to overall well-being. Here are some key advantages:
- Improved heart health: Non-meat protein sources, such as legumes and soy, are generally low in saturated fat and cholesterol, which can help reduce the risk of cardiovascular diseases.
- Weight management: Non-meat protein options tend to be lower in calories and higher in fiber, making them ideal for maintaining a healthy weight. They can also promote feelings of fullness, reducing the likelihood of overeating.
- Blood sugar control: Certain non-meat proteins, like beans and lentils, have a low glycemic index, meaning they cause a slower and more gradual increase in blood sugar levels. This can be particularly beneficial for individuals with diabetes or those at risk of developing it.
- Better digestion: Non-meat protein sources are typically rich in dietary fiber, which helps promote healthy digestion and regular bowel movements. This can alleviate issues such as constipation and promote a healthy gut.
- Reduced risk of chronic diseases: Non-meat protein sources, particularly plant-based options, are often packed with antioxidants, vitamins, and minerals that have been linked to a reduced risk of chronic diseases such as cancer, diabetes, and hypertension.
By incorporating non-meat protein into your diet, you can enhance your overall health and well-being. Whether you choose plant-based proteins, dairy and egg alternatives, or other sources, these options provide a wide range of benefits that can support a healthy lifestyle.
Environmental Considerations
Emphasizing the importance of environmental considerations when selecting protein sources can lead to more sustainable food choices that benefit both our health and the planet. By incorporating environmental considerations into our decision-making process, we can address key issues such as reducing our carbon footprint, preserving natural resources, conserving water, promoting biodiversity conservation, and minimizing pollution. Choosing non-meat protein options is an effective way to tackle these challenges. Animal agriculture, a major contributor to greenhouse gas emissions, deforestation, and water pollution, can be significantly reduced by opting for non-meat protein sources. Plant-based protein, for example, requires less water, land, and energy compared to animal-based protein. By making this shift, we can contribute to the preservation of critical habitats and the conservation of biodiversity. Furthermore, non-meat protein sources have a lower water footprint, aiding in water conservation efforts. Livestock farming, responsible for water pollution through manure production, can be mitigated by choosing non-meat protein options. By doing so, we can reduce pollution and its detrimental impacts on aquatic ecosystems. Additionally, the misuse of antibiotics in animal agriculture contributes to antimicrobial resistance, a serious public health concern. By selecting non-meat protein, we can help in the reduction of antimicrobial resistance. Therefore, considering environmental factors when choosing protein sources is crucial and can have a significant positive impact on our health and the planet.
Types of Non-Meat Protein
Discover a world of non-meat protein options with a variety of types to cater to your dietary preferences. From plant-based protein sources that pack a nutritional punch to the protein-rich offerings found in dairy and egg products, there are numerous alternatives to explore. Get ready to delve into the realm of alternative protein sources, where innovation and creativity unite to provide exciting options for those seeking non-meat protein alternatives. Say goodbye to bland meals and embrace the diversity of protein choices that can enhance your diet and overall well-being.
Plant-Based Protein Sources
When it comes to plant-based protein sources, you have a variety of options to choose from:
- Lentils: These legumes are not only rich in protein but also high in fiber, iron, and folate.
- Quinoa: A complete protein, quinoa is also packed with essential amino acids, fiber, and minerals like magnesium and iron.
- Chickpeas: Versatile and delicious, chickpeas are not only a great source of protein but also provide fiber, vitamins, and minerals.
- Tofu: Made from soybeans, tofu is a popular plant-based protein option. It is low in calories and high in protein, calcium, and iron.
- Tempeh: Another soy-based protein, tempeh is fermented and offers probiotics along with high protein content.
- Beans: Black beans, kidney beans, and other varieties are excellent sources of both protein and fiber.
These plant-based protein sources are not only nutritious but also environmentally friendly. They require fewer resources and have a lower carbon footprint compared to animal-based protein sources. By incorporating these plant-based proteins into your diet, you can boost your protein intake and support overall well-being.
Fact: Did you know that per gram, plant-based protein sources have a significantly lower environmental impact than meat-based proteins? Choosing plant-based proteins can help reduce greenhouse gas emissions and conserve resources.
Dairy and Egg Protein Sources
Below is a table highlighting the dairy and egg protein sources:
Dairy Protein Sources | Egg Protein Sources | |
1. | Milk | Eggs |
2. | Yogurt | Egg Whites |
3. | Cheese | |
4. | Whey Protein |
Dairy protein sources include milk, yogurt, cheese, and whey protein. Eggs and egg whites are the main sources of egg protein. These dairy and egg protein sources are rich in essential amino acids, making them an excellent choice for those looking to increase their protein intake. Dairy products also provide important nutrients like calcium and vitamin D, which are essential for bone health. Egg protein is highly bioavailable, meaning it is easily digested and absorbed by the body.
It’s important to note that some individuals may have allergies or intolerances to dairy or eggs. In that case, there are alternative non-dairy and non-egg protein sources available, such as plant-based proteins like beans, lentils, and tofu.
Throughout history, dairy and eggs have been valued as sources of protein and nutrition. Both dairy and eggs have been consumed by humans for centuries, providing them with essential nutrients. Whether enjoyed on their own or incorporated into various dishes, dairy and eggs continue to be popular protein sources around the world.
Alternative Protein Sources
Alternative protein sources are an essential part of a balanced diet, especially for those who choose to reduce or eliminate their consumption of meat. Lentils, quinoa, and chickpeas are plant-based sources that provide a good amount of protein along with additional fiber, iron, and other nutrients. Tofu, Greek yogurt, and tempeh are excellent sources of protein for vegetarians and provide calcium, probiotics, and other important nutrients. Seitan, a protein-rich meat substitute made from wheat gluten, is a popular choice for those following a vegetarian or vegan diet. Even peanut butter, a commonly enjoyed spread, offers a decent amount of protein along with healthy fats.
Incorporating these alternative protein sources into your diet can help meet your protein needs without relying solely on meat. Whether you’re aiming to reduce your environmental impact, improve your health, or explore new flavors, these diverse protein sources offer a range of options for a well-rounded diet. It’s important to experiment with different recipes and combinations of these alternative protein sources to enhance the nutritional value of your meals while enjoying the benefits they provide.
History of
Throughout history, alternative protein sources have played a vital role in various cultures’ diets. Lentils have been a staple in Indian cuisine for centuries, providing a reliable source of protein and nutrients. In South America, quinoa has been cultivated for over 5,000 years, serving as a valuable source of protein for ancient civilizations. Chickpeas, a versatile legume, have been consumed in the Middle East for thousands of years, contributing to the region’s rich culinary traditions.
The popularity of tofu, tempeh, and other soy-based protein sources can be traced back to ancient China and Indonesia. These plant-based proteins were integral to vegetarian and Buddhist diets. Greek yogurt, known for its creamy texture and high protein content, has been a key component of Mediterranean diets for generations.
As vegetarian and vegan lifestyles gain prominence in modern society, the demand for alternative protein sources continues to grow. This has fueled the development of innovative meat substitutes like seitan, which provide a meat-like texture and ample protein content. Today, the wide availability and variety of alternative protein sources offer individuals the opportunity to explore plant-based options and diversify their diets while supporting their health and environmental goals.
Non-Meat Protein vs. Meat Protein
When it comes to comparing non-meat protein and meat protein, there are several key factors to consider. In this section, we’ll delve into the nutritional comparison, digestibility and absorption, and environmental impact of these two protein sources. Get ready to uncover the facts, figures, and expert insights that shed light on the advantages and disadvantages of each option. So, whether you’re curious about building muscle, optimizing nutrient intake, or reducing your carbon footprint, we’ve got you covered. Let’s explore the world of non-meat and meat protein!
Nutritional Comparison
When considering nutritional comparison, non-meat protein options like plant-based sources offer a range of nutrient-dense choices, lower levels of saturated fats and cholesterol, and a reduced environmental impact compared to meat protein sources.
Digestibility and Absorption
When it comes to digestibility and absorption, non-meat protein sources offer several advantages over meat protein.
Advantage | Description |
High Digestibility | Non-meat protein sources, such as plant-based proteins, are generally easier for the body to digest compared to meat protein. They contain fewer complex fibers and fats that can slow down digestion, allowing for better absorption of nutrients. |
Faster Absorption | Non-meat protein sources are often absorbed more quickly by the body compared to meat protein. This is because they are broken down into amino acids and peptides during digestion, which can be readily absorbed and utilized by the body for various metabolic processes. |
Reduced Risk of Digestive Issues | For individuals with sensitive digestive systems or specific dietary restrictions, non-meat protein sources can be a viable alternative. They are less likely to cause digestive discomfort, such as bloating, gas, or inflammation, making them suitable for those with digestive disorders or food intolerances. |
Considering these factors, incorporating non-meat protein sources into your diet can offer better digestibility and absorption of essential nutrients. Plant-based proteins like beans, lentils, and quinoa provide high-quality protein with excellent digestibility. Additionally, fortified plant-based products like tofu and tempeh offer a complete amino acid profile for optimal absorption.
To enhance the digestibility and absorption of non-meat protein, it is important to properly cook or prepare these protein sources. Soaking beans and legumes overnight and cooking them thoroughly can improve both digestibility and nutrient availability. Pairing plant-based proteins with foods rich in vitamin C can also enhance iron absorption.
Environmental Impact
The environmental impact of non-meat protein is one of the key reasons why many people choose to consume plant-based protein sources over animal protein. Here are some factors to consider:
- Agricultural land usage: Plant-based protein sources require significantly less land compared to meat production. For example, producing a gram of protein from peas requires only 0.2 square meters of land, while producing a gram of protein from beef requires 25 square meters.
- Water usage: Plant-based protein sources have a lower water footprint compared to animal protein. It takes around 15,415 liters of water to produce 1 kilogram of beef, while producing the same amount of tofu requires only 1,488 liters.
- Greenhouse gas emissions: Animal agriculture is a major contributor to greenhouse gas emissions. Plant-based protein sources have a much lower carbon footprint. Producing a gram of protein from lentils results in 0.9 kilograms of CO2 emissions, while producing a gram of protein from beef results in 61 kilograms.
- Biodiversity conservation: The expansion of animal agriculture leads to deforestation and habitat loss, threatening biodiversity. Choosing plant-based protein can help protect natural habitats and wildlife.
Incorporating non-meat protein into your diet not only has a positive impact on your health but also helps reduce the environmental footprint of your food choices. For example, by replacing one serving of beef with a plant-based protein source like lentils or chickpeas, you can save approximately 2,500 liters of water.
How to Incorporate Non-Meat Protein into Your Diet
Want to explore the world of non-meat protein and incorporate it into your diet? Look no further than this section! Discover plant-based protein recipes that are not only delicious but also packed with nutrients. Learn about combining different protein sources to ensure you’re getting complete nutrition. And if you’re considering transitioning to non-meat protein, we’ve got some handy tips for you. Get ready to take your diet to a whole new level with these exciting non-meat protein options!
Plant-Based Protein Recipes
Below is a table showcasing some plant-based protein recipes:
Recipe | Protein Source |
Quinoa Salad | Quinoa, chickpeas, edamame |
Lentil Curry | Lentils, spinach, tofu |
Black Bean Burger | Black beans, brown rice, quinoa |
Chickpea Stir-Fry | Chickpeas, mixed vegetables, quinoa |
Tofu Scramble | Tofu, bell peppers, spinach |
These plant-based protein recipes are a great way to incorporate more protein into your diet while enjoying delicious meals. Quinoa salad is a nutritious option packed with protein from quinoa, chickpeas, and edamame. Lentil curry is a flavorful dish that combines lentils, spinach, and tofu for a protein-rich meal. If you’re looking for a meatless burger option, try a black bean burger made with black beans, brown rice, and quinoa. A chickpea stir-fry is a quick and easy meal that includes protein-rich chickpeas, mixed vegetables, and quinoa. Lastly, a tofu scramble is a satisfying breakfast option that combines tofu, bell peppers, and spinach for a protein-packed start to your day.
Try experimenting with these plant-based protein recipes to add variety and nutrition to your meals. Incorporating more plant-based proteins into your diet can have numerous health benefits and reduce your environmental impact. Enjoy the delicious flavors and reap the benefits of plant-based protein!
Combining Protein Sources for Complete Nutrition
To ensure complete nutrition, it is important to combine different sources of protein in your diet. By incorporating a variety of protein-rich foods, you can ensure that your body receives all the essential amino acids it needs for optimal health.
Protein Source | Amino Acid Composition | Nutritional Benefits |
Plant-based proteins (legumes, nuts, seeds) | Contain varying levels of different amino acids | High in fiber, antioxidants, and essential nutrients |
Dairy and egg proteins | Contain all essential amino acids | Rich in calcium, vitamin D, and other important nutrients |
Alternative protein sources (quinoa, tofu, tempeh) | Contain all essential amino acids | Provide a range of essential nutrients, including iron and omega-3 fatty acids |
By combining these protein sources, you can create meals that are not only delicious but also nutritionally balanced. For example, you could enjoy a salad with a variety of vegetables, topped with chickpeas and sunflower seeds for added protein and crunch. Another option is to make a stir-fry with tofu, broccoli, and quinoa, ensuring you get a complete amino acid profile.
Remember, it is important to vary your protein sources to ensure you are getting all the essential amino acids. Additionally, by combining protein sources, you can also benefit from the different nutrients these foods offer, such as fiber, vitamins, and minerals.
Fact: Did you know that combining plant-based proteins with grains or legumes can provide a complete amino acid profile similar to that found in meat? This makes it easy for vegetarians and vegans to meet their protein needs while enjoying a diverse and nutritious diet.
Tips for Transitioning to Non-Meat Protein
When transitioning to a non-meat protein diet, here are some tips for transitioning to non-meat protein:
- Start slowly: Gradually reduce your consumption of meat and incorporate more non-meat protein sources into your meals. This will give your body time to adjust to the change.
- Experiment with different sources: Try a variety of plant-based protein sources such as beans, lentils, tofu, tempeh, and seitan. Explore alternative protein sources like quinoa, chia seeds, and hemp seeds.
- Focus on whole foods: Opt for whole foods rather than processed meat alternatives. These include fresh fruits, vegetables, whole grains, nuts, and seeds.
- Combine protein sources: Combine different non-meat protein sources to ensure you’re getting a complete range of essential amino acids. For example, pairing beans with rice or adding nuts and seeds to salads.
- Plan balanced meals: Plan your meals to include a variety of nutrients. Include complex carbohydrates, healthy fats, and plenty of fruits and vegetables alongside your protein sources.
- Try new recipes: Experiment with plant-based protein recipes to keep your meals interesting and flavorful. There are many delicious options available that can be just as satisfying as meat-based dishes.
- Seek guidance if needed: If you’re unsure about meeting your nutritional needs, consult a registered dietitian or nutritionist who can provide personalized advice and guidance.
By following these tips for transitioning to non-meat protein, you can smoothly transition to a non-meat protein diet and enjoy the numerous health and environmental benefits it offers.
Potential Challenges and Concerns
Navigating the world of non-meat protein can present some interesting challenges and concerns. In this section, we will uncover ways to meet protein needs without relying on meat, address potential nutrient deficiencies that can arise, and even discuss strategies for overcoming taste and texture preferences. So, if you’re curious about the potential obstacles and how to overcome them on your journey towards a non-meat protein lifestyle, read on. It’s time to explore the exciting possibilities and solutions that await!
Meeting Protein Needs without Meat
To meet your protein needs without meat, you can consider the following options:
- Plant-based protein sources: Incorporate foods like legumes (such as lentils, chickpeas, and black beans), tofu, tempeh, and edamame into your meals. These plant-based sources are rich in protein and can be used in various recipes.
- Dairy and egg protein sources: If you consume dairy and eggs, include them in your diet as they are excellent sources of protein. Greek yogurt, cottage cheese, and eggs are all great options.
- Alternative protein sources: Explore alternatives like quinoa, chia seeds, hemp seeds, and nutritional yeast. These foods offer a good amount of protein and can be used in various preparations.
Remember to consider your specific protein needs and consult with a healthcare professional or registered dietitian to ensure you are meeting your requirements. It’s important to create a balanced diet that includes a variety of protein sources to ensure you are getting all the essential amino acids your body needs.
Incorporating non-meat protein sources can be a delicious and healthy way to meet your protein needs. Experiment with different recipes, such as lentil curry, tofu stir-fry, or a quinoa salad, to add diversity to your meals. Don’t be afraid to try new flavors and ingredients to keep your meals exciting and enjoyable.
By choosing protein-rich plant-based foods and incorporating them into your diet, you can meet your protein needs without relying solely on meat.
Addressing Potential Nutrient Deficiencies
Addressing potential nutrient deficiencies when following a non-meat protein diet is crucial for maintaining optimal health. Here are some important considerations:
- Iron: Non-meat protein sources may not provide as readily absorbable iron as meat does. To ensure sufficient iron intake, include iron-rich plant-based foods such as lentils, spinach, tofu, and fortified cereals in your diet.
- Vitamin B12: This essential nutrient is primarily found in animal-based foods. If you’re following a vegetarian or vegan diet, consider including fortified foods like plant-based milks, breakfast cereals, and nutritional yeast, or consider a B12 supplement.
- Omega-3 fatty acids: While fish is a common source of omega-3s, vegetarian sources like chia seeds, flaxseeds, walnuts, and algae-derived supplements can provide these important fatty acids.
- Calcium: Dairy products are traditionally rich in calcium, but if you’re avoiding them, choose plant-based alternatives fortified with calcium. Dark leafy greens like kale and broccoli, as well as fortified plant-based milks and juices, can also contribute to calcium intake.
- Zinc: Plant-based sources of zinc include legumes, whole grains, nuts, and seeds. Ensuring an adequate intake of these foods can help meet your zinc needs.
When following a non-meat protein diet, it’s important to plan meals carefully to ensure adequate intake of these essential nutrients. Consulting with a registered dietitian can provide personalized guidance and ensure you meet your nutrient needs. Always prioritize a varied and balanced diet to maintain overall health while addressing potential nutrient deficiencies.
Overcoming Taste and Texture Preferences
When it comes to incorporating non-meat protein into your diet, overcoming taste and texture preferences can be a challenge. However, with some strategies and experimentation, you can find enjoyable alternatives. Here are some tips:
- Try different cooking methods: Experiment with various cooking techniques to enhance the flavor and texture of non-meat protein sources. For instance, you can add flavor by marinating tofu or tempeh, and achieve a crispy texture by baking or grilling them.
- Seasoning and spices: Use a variety of herbs, spices, and seasonings to add flavor to your non-meat protein dishes. Mixing different spices can create unique and appetizing flavors.
- Texture alternatives: If you’re not fond of the texture of specific non-meat protein sources like tofu or seitan, try alternatives such as lentils, chickpeas, quinoa, or mushrooms, which offer a meaty texture.
- Food pairings: Combine non-meat protein sources with other ingredients that complement their taste and texture. Consider adding roasted vegetables to a bean salad or topping a tofu stir-fry with a flavorful sauce to enhance the overall taste.
- Cooking with sauces: Incorporate delicious sauces, dressings, or gravies to elevate the flavor of non-meat protein. Experiment with various combinations to find your favorite options.
By exploring different cooking techniques, seasonings, and complementary ingredients, you can overcome taste and texture preferences and discover enjoyable ways to incorporate non-meat protein into your diet.
Some Facts About Non-Meat Protein:
- ✅ A vegetarian or vegan diet can provide sufficient protein from various plant sources. (Source: Healthline)
- ✅ Plant-based diets have several health benefits, including lower blood pressure and a healthier heart. (Source: Healthline)
- ✅ Poorly planned or highly processed vegan diets can lead to nutrient deficiencies, especially in vitamin B12, iodine, iron, calcium, zinc, and long-chain omega-3s. (Source: Healthline)
- ✅ Lentils, beans, and chickpeas are high protein plant foods. (Source: Healthline)
- ✅ Nutritional yeast is a complete source of plant protein and is fortified with several nutrients. (Source: Healthline)
Frequently Asked Questions
1. Can a non-meat diet lead to nutritional deficiencies?
Yes, poorly planned non-meat diets can result in nutritional deficiencies. It is important to ensure that you are getting enough nutrients like vitamin B12, iron, calcium, zinc, and omega-3 fatty acids. You can bridge nutritional gaps by incorporating fortified foods and supplements into your diet.
2. Can non-meat protein sources provide healthy fats?
Yes, non-meat protein sources such as nuts, seeds, and oils contain healthy unsaturated fats. These fats are beneficial for heart health and can be included in a well-balanced diet.
3. How does activity level affect protein requirements in a non-meat diet?
Depending on your activity level, your protein needs may vary. Athletes and individuals with higher activity levels may require more protein to support muscle strength and repair. It is important to adjust your protein intake accordingly based on your activity level.
4. Can a non-meat diet help lower blood pressure and reduce the risk of chronic illnesses?
Yes, adopting a non-meat diet, especially one rich in whole plant foods, has been linked to lower blood pressure and a reduced risk of chronic illnesses such as heart disease, diabetes, and certain cancers. Plant-based diets can improve overall health and lower the risk of these conditions.
5. Is muscle strength affected by a non-meat diet?
No, a well-planned non-meat diet can provide sufficient protein to support muscle strength and development. Plant-based protein sources such as legumes, tofu, tempeh, and plant-based beverages can help meet your protein needs and support muscle mass.
6. Can a non-meat diet meet the protein requirements of a vegetarian or vegan?
Yes, a non-meat diet can provide sufficient protein for vegetarians and vegans. Plant-based protein sources like beans, lentils, nuts, seeds, and whole grains can be easily combined throughout the day to provide all essential amino acids needed for a well-balanced diet.