How many essential amino acids are there in total?
Understand the Problem
The question is asking for the total number of essential amino acids, which are the amino acids that the body cannot synthesize and must be obtained through diet.
Answer
Nine
The final answer is nine.
Answer for screen readers
The final answer is nine.
More Information
The nine essential amino acids that humans must obtain through their diet include histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine.
Tips
A common mistake is to confuse the number of essential amino acids with the number of total amino acids required by the human body, which is 20.
Sources
- Biochemistry, Essential Amino Acids - StatPearls - NCBI Bookshelf - ncbi.nlm.nih.gov
- Amino Acid: Benefits & Food Sources - Cleveland Clinic - my.clevelandclinic.org
- Essential Amino Acids: Definition, Benefits, and Food Sources - healthline.com
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