Vitamin B6 - Pyridoxine
Pyridoxine, or vitamin B6, is necessary for the absorption and
metabolism of amino acids.
It also plays roles in the use of fats in the body and in the
formation of red blood cells. Pyridoxine deficiency is characterized by skin disorders, cracks at the mouth
corners, smooth tongue, convulsions, dizziness, nausea, anemia, and kidney stones. The best sources of pyridoxine
are whole (but not enriched) grains, cereals, bread, liver, avocadoes, spinach, green beans, and bananas.
Pyridoxine is needed in proportion to the amount of protein consumed.
See: Vitamin B12
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VITAMIN B6 (PYRIDOXAL-5-PHOSPHATE)
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The ingredient for this issue of Xtend-Your-Life is
Pyridoxal-5-Phosphate or Vitamin B5. BUT...it is important whilst reading this that you do not
confuse it to the 'normal' Vitamin B5 which is called Pyridoxine. This is the type that is
generally used in supplements. The Pyridoxal-5-Phosphate form of B6 which we use is the active
form, but uncommon because of the much greater cost.
For more info on the differences please refer to our February
newsletter where there is an article about pharmaceutical firms trying to ban it. It is pronounced
(pie-ree-doks-all-five-foss-fate). A good way to remember what role Vitamin B6 plays in the body is
to think of it as the host of a big party. It introduces amino acids to aldehydes and enzymes and
gets them mingling.
In the presence of Vitamin B6, instead of exchanging business cards
(or phone numbers), they become involved in various metabolic reactions that are beneficial for the
body. An example of this is the important conversion of homocysteine to methionine in a process
called methylation. Homocysteine needs to be methylated to convert it back to
methionine.
If this process does not happen your body is in for some serious
trouble, as homocysteine is associated with a host of degenerative diseases and health conditions.
Other examples of Vitamin B6's role include:
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Playing a key part in the conversion of dopa
(3,4-dihydroxyphenylalanin) into dopamine...the 'feel-good' chemical in your brain.
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Ensuring that the conversion of the neurotransmitter glutamate to
the inhibitory neurotransmitter GABA goes ahead...this is very important has it helps to
regulate muscle tone and neuromuscular activity.
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Allowing SAMe to be converted to form propylamine...an important
precursor for a group of amino acids called polyamines which are essential for cell growth and
the healthy functioning of the cell membrane.
What Else Can We Say About Vitamin B6?
Well, Vitamin B6 supports glycogen and nitrogen metabolism, the
production and transport of amino acids, production and maintenance of red blood cells and
hemoglobin, nerve tissues and antibodies.
Vitamin B6 may be beneficial in acne, autism, attention
deficit-hyperactivity disorder (ADHD), arthritis, allergies, depression, high homocysteine, heart
disease, elevated lipid levels, immune depression, morning sickness, depression associated with
pregnancy and oral contraceptive use, premenstrual syndrome, menopausal symptoms, age-related
cognitive decline, muscle cramps, conjunctivitis, bladder infection, hypertension, water retention,
asthma, canker sores, carpal tunnel syndrome, schizophrenia, vertigo and obesity.
Wow, that's pretty cool! But what happens if I have a Vitamin
B6 deficiency?
Firstly, you're not alone. As rare as it is in Western countries,
many people still are deficient in Vitamin B6. In fact, women who take oral contraceptives tend to
have lower levels of this B6 vitamin in their blood. Other people at risk are extreme dieters,
alcoholics and the elderly.
Okay, so how can I get more B6 in my
diet?
Great question! However, while found in meats, liver, whole grains,
and vegetables, substantial amounts of B6 are lost in cooking and oxidation. It's because of this
that we suggest you choose a supplement like Total Balance to get optimum amounts of B6 every
day.
In addition to giving you B6 as well as all the nutrients and
minerals you need daily, Total Balance is specially formulated to help you fight the 5 main causes
of aging such as glycation, methylation, DNA damage, inflammation and free radicals.
There are many other ingredients in Total Balance, so be sure to
visit the Total Balance Overview page on our website to find the version that best suits you and
read about all the ingredients in the formula.
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More on Vitamin B6
What foods provide vitamin B6?
Vitamin B6 is found in a wide variety of foods
including fortified cereals, beans, meat, poultry, fish, and some fruits and vegetables . The table of
selected food sources of vitamin B6 suggests many dietary sources of B6.
The Recommended Dietary Allowance (RDA) is the average daily dietary intake
level that is sufficient to meet the nutrient requirements of nearly all (97 to 98 percent) healthy individuals in
each life-stage and gender group.
The 1998 RDAs for vitamin B6 for adults, in milligrams, are:
| Life-Stage |
Men |
Women |
Pregnancy |
Lactation |
| Ages 19-50 |
1.3 mg |
1.3 mg |
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| Ages 51+ |
1.7 mg |
1.5 mg |
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| All Ages |
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1.9 mg |
2.0 mg |
| Results of two national surveys, the National Health and Nutrition Examination Survey
(NHANES III 1988-94) and the Continuing Survey of Food Intakes by Individuals (1994-96 CSFII) ,
indicated that diets of most Americans meet current intake recommendations for vitamin B6
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Clinical signs of vitamin B6 deficiency are rarely seen in the
United States. Many older Americans, however, have low blood levels of vitamin B6, which may suggest a
marginal or sub-optimal vitamin B6 nutritional status. Vitamin B6 deficiency can occur in
individuals with poor quality diets that are deficient in many nutrients. Symptoms occur during later stages of
deficiency, when intake has been very low for an extended time. Signs of vitamin B6 deficiency include
dermatitis (skin inflammation), glossitis (a sore tongue), depression, confusion, and convulsions . Vitamin
B6 deficiency also can cause anemia Some of these symptoms can also result from a variety of
medical conditions other than vitamin B6 deficiency. It is important to have a physician evaluate these
symptoms so that appropriate medical care can be given.
Who may need extra vitamin B6 to prevent a deficiency?
Individuals with a poor quality diet or an inadequate B6 intake for an extended period may benefit from
taking a vitamin B6 supplement if they are unable to increase their dietary intake of vitamin
B6 . Alcoholics and older adults are more likely to have inadequate vitamin B6 intakes than
other segments of the population because they may have limited variety in their diet. Alcohol also promotes the
destruction and loss of vitamin B6 from the body.
Asthmatic children treated with the medicine theophylline may need to take a vitamin B6 supplement .
Theophylline decreases body stores of vitamin B6 , and theophylline-induced seizures have been linked to
low body stores of the vitamin. A physician should be consulted about the need for a vitamin B6
supplement when theophylline is prescribed.
See: Vitamin B12 - Cobalamin
MENU
Vitamin A
Vitamin
B1-Thiamine
Vitamin B2
Vitamin B3 -
Niacin
Vitamin B6 -
Pyridoxine
Vitamin B12 -
Cobalamin
Other B Vitamins
Vitamin C
Vitamin D
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