Taken from my Physiology of Sleep FAQ:
Vitamin B6: Vitamin B6 is a group of substances pyridoxine, pyridoxal, and pryidoxamine) that are widely distributed in animal and plant tissues. These substances are involved in the metabolism of amino acids (the building blocks of protein) and in the breakdown of glycogen (a stored sugar). Vitamin B6 is found in liver, pork, chicken, fish, and whole grains. A deficiency can result in functional disturbances of the nervous system.
Pyridoxine is essential in the conversion of amino acids to carbohydrates or fats for storage or energy, the synthesis of new amino acids from carbohydrates, and the conversion of the amino acid tryptophan to niacin. Vitamin B6 provides a role in the development of most protein-related compounds including hormones, neurotransmitters such as serotonin, hemoglobin in red blood cells, and many enzymes.
QUOTE(www.anyvitamins.com)
The dosage underneath is the Recommended Dietary Allowance (RDA), but be aware that this dosage is the minimum that you require per day, to ward off serious deficiency of this particular nutrient. In the therapeutic use of this nutrient, the dosage is usually increased considerably, but the toxicity level must be kept in mind.
Males 2 mg per day and females 2 mg per day.
For those who feel depressed, or any symptons of depression (lack of self-confidence, loss of will to do anything, loss of desire to wake up, consistently sleeping, etc. etc.) I recommend taking Vitamin B6 or trying to incorporate more food that involve this vitamin before seeking professional help.
Pyridoxine content of Selected Foods, in Milligrams per 3 1/2-oz. (100-gm.) Serving (Murray, 1996)
(In descending order)
Yeast, torula - 3.00
Yeast, brewer's - 2.50
Sunflower seeds - 1.25
Wheat germ, toasted - 1.15
Soybeans, dry - .63
Walnuts - .73
Soy bean flour - .63
Lentils, dry - .60
Lima beans, dry - .58
Buckwheat flour - .58
Blackeye peas, dry - .56
Navy beans, dry - .56
Brown rice - .55
Hazelnuts - .54
Garbonzos, dry - .54
Pinto beans, dry - .54
Bananas - .51
Avocados - .42
Whole-wheat flour - .34
Chestnuts, fresh - .33
Kale - .30
Rye Flour - .30
Spinach - .28
Turnip greens - .26
Peppers, sweet - .26
Potatoes - .25
Prunes - .24
Raisins - .24
Brussels sprouts - .23
Barley - .22
Sweet potatoes - .22
Cauliflower - .21
- Murray, M. Encyclopedia of Nutritional Supplements. Rocklin, CA: Prima Publishing, 1996.
You may typically buy B6 in grocery stores for less than $10.
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