Essential amino acids are not made in the body.
Humans lack the metabolic pathways and enzymes necessary to synthesize these amino acids from other compounds. Consequently, we must obtain essential amino acids through our diet.
Why are they called "essential"?
The term "essential" signifies that these amino acids are indispensable for human health and must be consumed through food, as our bodies cannot produce them. Failing to obtain adequate amounts of essential amino acids can lead to various health problems, including impaired growth, weakened immune function, and digestive issues.
List of Essential Amino Acids:
There are nine essential amino acids:
- Histidine
- Isoleucine
- Leucine
- Lysine
- Methionine
- Phenylalanine
- Threonine
- Tryptophan
- Valine
Dietary Sources of Essential Amino Acids:
A balanced diet rich in protein is crucial for obtaining all the essential amino acids. Good sources include:
- Animal Products: Meat, poultry, fish, eggs, and dairy products are complete proteins, meaning they contain all nine essential amino acids in sufficient amounts.
- Plant-Based Sources: Quinoa and soy are complete plant-based protein sources. Other plant-based sources like beans, lentils, nuts, seeds, and whole grains can provide essential amino acids, but it's important to eat a variety of these foods to ensure you get all nine.
In Summary:
Because humans can't synthesize them, essential amino acids must come from the food we eat. A varied and protein-rich diet is the key to obtaining these vital nutrients.
