The best sources for L Lysine are
meats, fish, and eggs. Vegans and Vegetarians are
reported to often lack essential amino acids.
"L-lysine is an amino acid (a building block
of protein) that is essential for health. However,
it cannot be manufactured naturally in the human
body like other types of amino acids. Therefore,
L-lysine, also called lysine, is considered as
one of the eight essential amino acids.
In order to obtain lysine, one has to eat foods
high in its content or take dietary supplements
containing it. As a building block for protein,
amino acids like L-lysine are necessary for normal
growth and development. In particular, L-lysine
is needed by the body to manufacture carnitine,
a substance that is used in the conversion of
fatty acids into energy. It also helps in calcium
absorption and collagen formation which are important
for muscle and bone health.
Foods that are high in L-lysine include high
protein foods like nuts, red meat, eggs, milk,
cheese, beans, and sardines. However, some people
may need more than just the usual dietary food
to supply their needs for lysine, such as athletes,
body builders, vegetarians, and vegans. These
people can get additional sources of L-lysine
from nutritional supplements in the form of liquids,
tablets, or capsules which are available in health
stores or pharmacies." http://www.md-health.com/L-Lysine-Benefits.html
"This report demonstrates that a 4-d long
L-lysine deficiency in rats interfered with the
normal circadian release of the neurotransmitter
serotonin, but not dopamine,...We conclude that
a severe deficiency of dietary L-lysine enhances
serotonin release in the amygdala, with subsequent
changes in psychobehavioral responses to stress."
Summary of a great article by Alexander Yezovit."
Lysine is one of the three most important essential
amino acids that our body can only get from food."
Lysine is needed to digest food. Low levels may
cause herpes. Older people need more, lack of
lysine upsets the whole body. There is much more
to the article and it provides valuable information
about L Lysine. http://www.fit-leader.com/eng-articles/lysine.shtml