Milly Gaines
Amino acids are the building blocks of protein, which is essential for muscle growth, metabolism, and overall health. While our bodies can produce non-essential amino acids, it is unable to make essential amino acids, which must be obtained through our diet. A diet rich in amino acids has many benefits, including improved skin and hair health, enhanced immune response, and better sexual and fertility health. To ensure adequate intake, it is recommended to consume a variety of foods, including animal proteins such as meat, eggs, and poultry, as well as plant-based sources like nuts, beans, and soy products. For those who follow a plant-based diet, it is important to include a greater variety of amino acid-rich plant foods. Additionally, supplements can be considered, but it is always advisable to consult a healthcare professional for guidance on specific dosing and suitable brands.
| Characteristics | Values |
|---|---|
| Number of essential amino acids | 9 |
| Essential amino acids | Histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine |
| Amino acids from diet | Yes, essential amino acids cannot be produced by the body |
| Amino acids from plant-based diets | Yes, but need to eat a variety of plant foods |
| Amino acids from animal-based diets | Yes, meat, eggs, and poultry are good sources |
| Amino acids from supplements | Yes, but speak to a healthcare professional first |
| Benefits of amino acids | Muscle development, growth, immune response, fertility, mood, skin, and hair health |
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What You'll Learn
Eat animal proteins like meat, eggs, and poultry
Amino acids are the molecules that make up proteins in your body. They are responsible for many crucial functions, such as building muscle, regulating hormones, and repairing tissue. While your body can produce 11 non-essential amino acids, it is essential to obtain the remaining nine amino acids through your diet. These nine essential amino acids include histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine.
Eating animal proteins is an excellent way to ensure you're getting enough amino acids. Meat, eggs, and poultry are considered complete proteins, meaning they contain all nine essential amino acids. For example, a 174-gram piece of braised chicken breast provides 55.9 grams of complete protein. Similarly, beef, turkey, and chicken are also rich sources of animal protein. These animal-based proteins are easily absorbed and utilized by your body.
Eggs, in particular, are a nutritious option, offering a complete protein source in a single, convenient package. Whether you prefer them scrambled, boiled, or fried, eggs are a versatile and tasty way to boost your amino acid intake. Poultry meat and eggs are especially beneficial as they provide high-quality protein with sufficient amounts and proper ratios of amino acids, supporting human growth, development, and overall health.
In addition to their amino acid content, animal proteins offer other important nutrients, such as vitamin B12 and heme iron. Heme iron, found in animal proteins, is more readily absorbed by the body compared to non-heme iron, which is present in plant-based sources. However, it's worth noting that not all animal proteins are equal in terms of nutrition. Ultra-processed animal products, like hot dogs and chicken nuggets, tend to be high in unhealthy fats and sodium, so they may not be the best choices for overall health.
If you're considering adding more animal proteins to your diet, it's always a good idea to consult with a healthcare professional or a registered dietitian. They can guide you in making informed choices that align with your health goals and ensure you're getting a balanced mix of nutrients.
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Consume plant foods like quinoa, legumes, and soybeans
Amino acids are the building blocks of protein, and your body needs 20 amino acids to function properly. While your body can produce 11 of these amino acids, the remaining nine, known as essential amino acids, must be obtained from food or supplements. These include tryptophan, used to make important brain chemicals, and leucine and methionine, which are essential for tissue growth and repair.
One way to increase your amino acid intake is to consume plant foods like quinoa, legumes, and soybeans. Quinoa, a type of edible seed indigenous to the Andean region of South America, is a good source of plant protein and fiber. It is considered a complete protein, containing all nine essential amino acids. Quinoa can be prepared in a variety of ways, such as boiling it in water or milk for a breakfast cereal, popping it like popcorn, or using it as a substitute for rice or pasta.
Legumes, which include peas and beans, are another excellent source of high-quality protein. While individual legumes may not contain all nine essential amino acids, they are still a valuable part of a balanced diet. For example, 17%-20% of the protein in peas and beans is made up of the amino acid lysine, which is essential for tissue growth and repair. Legumes can be easily incorporated into meals, such as salads, soups, or stir-fries.
Soybeans, native to East Asia, are a valuable source of highly nutritional protein, fiber, vitamins, and minerals. They are one of the few plant foods that provide complete proteins, containing all the essential amino acids. Soybean products like tofu, soy milk, and soybean dessert have been found to retain their amino acid content during processing, making them an excellent way to add amino acids to your diet.
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Incorporate multiple protein sources into meals to get all the micronutrients and macronutrients you need
Amino acids are the building blocks of protein, and your body needs them to make protein and perform many other important functions, such as building muscle, repairing tissue, and making hormones. While your body can produce some amino acids on its own, there are nine essential amino acids that you must obtain from your diet. These are histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine.
To ensure you're getting all the essential amino acids you need, it's important to incorporate multiple protein sources into your meals. This is because different foods contain varying amounts and types of amino acids. By including a variety of protein sources in your diet, you can increase your chances of obtaining all the essential amino acids your body requires.
Animal-based proteins, such as meat, poultry, fish, eggs, and dairy, tend to be complete proteins, meaning they contain all the essential amino acids. However, you can also find complete proteins in plant-based sources such as quinoa, soy products (edamame, tofu, soybeans), and chia seeds. Legumes (peas, beans, lupins) are another excellent plant-based protein source, with 20%-45% of their protein coming from the amino acid lysine.
In addition to these, you can also incorporate other plant-based proteins like nuts, brown rice, green peas, and oats, which are high in amino acids but may not contain all nine essential amino acids. By combining these incomplete protein sources with other foods that provide the missing amino acids, you can ensure you're getting a full range of amino acids.
When planning your meals, consider using resources like the USDA's MyPlate system or Harvard Health's Healthy Eating Plate, which can help you visualize how to incorporate a variety of protein sources while also meeting your micronutrient and macronutrient needs. Macronutrients like carbohydrates, fats, and protein provide your body with energy, while micronutrients like vitamins and minerals are needed in smaller amounts for other essential functions.
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Take amino acid supplements
Amino acids are the building blocks of protein, and your body needs 20 amino acids to function correctly. Your body can produce 11 of these amino acids, but you need to get the remaining nine essential amino acids from your diet. These include histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine.
Taking amino acid supplements is one way to ensure you are getting adequate amounts of these essential amino acids. Amino acid supplements are available over the counter as tablets, capsules, or amino energy powders that can be mixed with water.
Supplementing your diet with amino acids may increase the supply of nitrogen to your body and help maintain amino acid levels in your skeletal muscles. Amino acid supplements are frequently marketed to athletes for enhanced sports performance and quicker recovery. Some research suggests that taking tryptophan supplements may help reduce symptoms of depression and boost mood by increasing serotonin levels.
However, it is important to note that the U.S. Food and Drug Administration (FDA) has not approved amino acid supplements. Before taking any supplements, it is recommended that you speak with a healthcare professional who is knowledgeable about dietary supplements, such as your doctor or a registered dietitian. They can advise you on specific dosing, help you choose a reputable brand, and determine if supplementation is right for you.
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Eat more seafood
Seafood is an excellent source of amino acids, which are the building blocks of proteins. Proteins are essential for various bodily functions, including muscle growth, metabolism, and overall health.
Most types of fish contain essential amino acids and other important micronutrients. For example, salmon is a rich source of amino acids and has over 20 grams of protein in a 3.5-ounce serving. It is also high in Omega-3 fatty acids, which are important for heart health and other vital functions.
Other types of seafood, such as cold-water fish, are rich in lysine and aspartic acid, while marine fish are a good source of leucine. Small indigenous fishes contain histidine, and carps and catfishes are rich in glutamic acid and glycine.
By including a variety of seafood in your diet, you can increase your intake of essential amino acids and support your body's protein synthesis, tissue repair, and overall health. Seafood is a particularly good source of complete proteins, meaning they contain all the essential amino acids that your body needs.
In addition to their high amino acid content, seafood is also a great source of healthy fats, vitamins, and minerals. For example, fatty fish like salmon are rich in Omega-3 fatty acids, which have been linked to improved heart health, reduced inflammation, and better brain function.
However, it is important to note that some individuals may have allergies or sensitivities to seafood, so it is always advisable to consult with a healthcare professional or registered dietitian before making significant changes to your diet. They can help you understand your specific nutritional needs and ensure that you are getting a balanced and varied diet that includes all the essential amino acids and other nutrients your body requires.
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Frequently asked questions
Amino acids are organic compounds that are the building blocks of proteins in your body. They play a big part in many crucial functions, such as making hormones, building muscle, repairing tissue, boosting your body's natural immune response, and more.
Amino acids can be found in both plant foods and animal foods. The best sources of essential amino acids are animal proteins such as meat, eggs, and poultry. Some plant foods, such as soybeans, quinoa, edamame, tofu, legumes, and beans, contain all nine essential amino acids, making them "complete" protein sources. Other sources of amino acids include seafood, nuts, brown rice, chia seeds, green peas, and oats.
There are no established amino acid requirements. However, the World Health Organization has provided daily required intakes for essential amino acids per 2.2 lbs (1 kg) of body weight. To find out how much you should consume per day, you can multiply the given numbers by your weight in kilograms. For example, a person who weighs 60 kg (132 lbs) should consume 1,200 mg (1.2 g) of isoleucine per day. It is recommended to consult a healthcare professional for specific dosing and recommendations based on your health goals.
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