<Tr> <Td> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> </Td> </Tr> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> <P> Essential fatty acids, or EFAs, are fatty acids that humans and other animals must ingest because the body requires them for good health but cannot synthesize them . Those not essential are non-essential fatty acids . </P> <P> The term "essential fatty acid" refers to fatty acids required for biological processes but does not include the fats that only act as fuel . Essential fatty acids should not be confused with essential oils, which are "essential" in the sense of being a concentrated essence . </P>

Fatty acids that cannot be synthesized within an organism are referred to as