Amino acids are the building blocks of protein. When we eat protein foods our bodies break down the proteins into their respective amino acids, and then builds them back up into new proteins that help build muscle and organs and help run other functions in the body. The amino acids cysteine and methionine are needed by the body as well, and can be gotten from certain foods.
Benefits of methionine amino acid
Methionine is a sulfur-containing and proteinogenic amino acid. It provides sulfur for the hair, skin, and nails plus maintains healthy cholesterol levels and supports healthy kidney function.
Benefits of cysteine amino acid
Cysteine helps promote liver health, specifically from the poison acetaldehyde (a by-product of alcohol metabolism), although it does not reduce drunkenness. Cysteine is also an antioxidant and therefore fights free radicals in the body.
This sulfur-containing amino acid is synthesized only when methionine is in the body, therefore it is connected to methionine in this way and is why both cysteine and methionine are usually taken together through dietary supplementation. This is why it is important to eat foods that contain both cysteine and methionine so that they can complement one another for proper health benefits.
Foods high in cysteine and methionine
Methionine and cysteine work in tandem in the body, with cysteine particularly being dependent upon the presence of methionine to be produced and work in the body. Food sources for both methionine and cysteine…
Methionine | Cysteine |
nuts | milk |
eggs | eggs |
spinach | red peppers |
mushrooms | onions |
broccoli | broccoli |
potatoes | oats |
fish/tuna | whey protein |
meats* | meats* |
seeds | cottage cheese |
almonds | yogurt |
parmesan cheese | ricotta |
brazil nuts | garlic |
wheat germ | brussels sprouts |
peanuts | granola |
chickpea | wheat germ |
corn | sprouted lentils |
pintos | |
lentils and sprouted lentils | |
medium-grained brown rice | |
red peppers | |
onions | |
oats | |
whey protein |
*chicken, pork, turkey, duck, cured/dried or ground beef, bacon, in particular
Be sure to talk to your doctor before making any extreme or unusual modifications to your diet.
References:
http://altmedicine.about.com/od/herbsupplementguide/a/L-Cysteine.htm