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Old 01-21-2006, 04:41 PM   #6 (permalink)
Sheila in Minnesota
 
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Re: Good News (that we already knew :) )

source: http://www.umm.edu/altmed/ConsSupple...itaminDcs.html



..."OverviewVitamin D is a fat-soluble vitamin found in certain foods and is manufactured in the skin as a result of direct exposure to sunlight. The liver and kidneys convert vitamin D from food sources or sunlight to its active form, calcitriol. Vitamin D helps the body maintain healthy levels of calcium and phosphorus and is therefore essential for building and maintaining healthy bones. Calcium, which is the principal element in bone, can be absorbed by the body only when vitamin D is present. Rickets, a vitamin D deficiency disease responsible for softening and weakening bones in children, used to be quite common but now is rarely seen in countries that have adopted the practice of fortifying milk products. Vitamin D and calcium are involved in many body functions, including keeping the immune and nervous systems healthy.
UsesGetting adequate vitamin D can help prevent a number of serious health conditions, including those listed below:
Osteoporosis
Adequate amounts of vitamin D, throughout one's life (in conjunction with exercise, proper nutrition, calcium, and magnesium) is necessary for preventing bone loss. Low levels of vitamin D and insufficient sunlight exposure (less than 20 minutes per day) are associated with osteoporosis. Vitamin D is needed to properly absorb calcium. Calcium, together with vitamin D, can help heal bone fractures from osteoporosis and decrease the risk of future bone breaks.
Other Bone Disorders
Vitamin D protects against the preventable bone diseases rickets and osteomalacia (softening of the bones in adults caused by inability to properly deposit calcium). Seniors in northern climates and people who do not receive direct sunlight for at least 45 minutes per week should take a vitamin D supplement or a multivitamin containing vitamin D.
Osteoarthritis
Arthritis and its associated symptoms occur because of breakdown of cartilage in the joints. Just as vitamin D is needed for bone health, it is also needed to maintain healthy cartilage. Low intakes of vitamin D may be linked to an increased risk of arthritis of the hip in older women and to joint changes seen on x-rays of both men and women. Studies evaluating vitamin D use for osteoarthritis have found that it prevents the breakdown of cartilage.
Abnormalities of the Parathyroid Hormones
The parathyroids are four glands located in the neck and produce parathyroid hormone, which is responsible for regulating the metabolism of calcium and phosphorous. Low levels of parathyroid hormone (called hypoparathyroid) leads to low levels of calcium and vitamin D. Vitamin D by prescription, along with calcium, is the mainstay of treatment for this condition.
On the other hand, low levels of vitamin D can lead to what is called secondary hyperparathyroidism. In other words, the parathyroid glands begin to over produce parathyroid hormone in response to the low levels of vitamin D -- trying to increase the amount of this essential nutrient in the body. The treatment for this type of hyperparathyroidism is also vitamin D.
High Blood Pressure
Low levels of vitamin D may play role in the development of high blood pressure in those with kidney disease and/or hyperparathyroidism. One study, for example, suggested that supplementation with vitamin D and calcium helped to lower blood pressure in older women with low levels of vitamin D and high levels of parathyroid hormone. Your doctor will determine if vitamin D may be helpful for preventing or treating high blood pressure.
Cancer
Researchers have found that people who eat adequate amounts of vitamin D have a lower risk of developing colon cancer than those who do not eat enough. Although it is best to obtain calcium and vitamin D from the diet, in order to get the suggested amounts for the prevention and treatment of colorectal cancer (800 IU/day of vitamin D and 1800 mg/day of calcium) one would most likely require supplementation. Some population-based evidence suggests that the same amount of vitamin D may improve survival rates in those with a history of breast cancer. More information is needed.
There is some evidence that a certain form of vitamin D inhibits growth of prostate cancer cells in laboratory tests. Fructose, the sugar found in fruits, stimulates the production of this type of vitamin D. Eating lots of fruits (several servings each day), in turn, is associated with lower rates of prostate cancer.
Vitamin D3 analogs (synthetic forms of this vitamin) show promise in the treatment of various cancers, including breast and skin. However, there remain a number of problems to be worked out before such therapy moves beyond the experimental stage.
Seasonal Affective Disorder (SAD)
SAD is a form of depression that occurs during the winter months because of lack of sunlight. This condition is often treated with photo (light) therapy. A few studies suggest that the mood of those with SAD improves when taking vitamin D supplements. Talk to your doctor about whether this is a safe and appropriate addition to your treatment regimen.
Diabetes
A recent study conducted in northern Finland (where the annual exposure to sunlight is very limited) found that infants given at least 2,000 IU of vitamin D per day (generally from cod liver oil) for the first year of life were significantly less likely to develop type 1 diabetes over a 30-year time course than infants who were fed lower amounts of vitamin D.
Interestingly, the recommended daily amount of vitamin D in Finland was once as high as 4,000 to 5,000 IU in the early 1960s. In 1964, it was reduced to 2,000 IU per day, in 1975 to 1,000 IU, and 400 IU in 1992. At the same time, incidence of type 1 diabetes has been on the rise in Finland, particularly throughout the 1980s.
Tuberculosis
Low levels of vitamin D may make a person more susceptible to contracting tuberculosis. Preliminary reports suggest that vitamin D may be a worthwhile addition to the usual treatment for this infection.
Atherosclerosis
Low levels of vitamin D may increase the risk of calcium build-up in the arteries, a significant component of atherosclerotic plaque. Atherosclerotic plaque build up in blood vessels can lead to a heart attack or stroke. More research is needed to understand the practical implications of this possible relationship between low vitamin D levels and atherosclerosis.
Multiple Sclerosis (MS)
Scientists have observed that MS rates are significantly lower in areas that receive a lot of sunlight and where people eat a lot of fish, which is rich in vitamin D (see Dietary Sources). This, combined with results from animal studies, suggests that vitamin D from foods and sunlight may help protect against this condition. This does not imply, however, that vitamin D supplements will help prevent or treat MS in people. Further studies are needed.
Other
Vitamin D supplementation may also be helpful for those who:
  • Are taking anticonvulsant drug therapy for seizures or corticosteroids, as these are both known to reduce bone mass.
  • Follow a strict vegan diet because these people do not eat foods that are sources of vitamin D such as fish, fortified dairy products, or eggs
  • Are overweight or obese. Obesity appears to alter the body's ability to produce vitamin D in the skin and to absorb it through the intestines. As a result, obesity is associated with vitamin D insufficiency.
  • Have psoriasis because levels of vitamin D may be lower if you have this skin disorder. More research is needed before conclusions can be drawn.
..."



Bear in mind when looking at research.... that our own Government 'medical watch dogs' ... Institute of Medicine ~ has the daily recommended units of Vitamin D 3 (and others) at severly low levels---- basically ~ not enough to get a fly high.....

They have refused to update the recommendations - ignoring both Nutritional Specialists and Medical Specialties that all agree - - - - the RDA is TOOOOO low and they are misleading the public into thinking they 'cure their vitamin D issue by drinking a glass of milk'.......

Not all vitamin D suppliments are VITAMIN D 3 ----- which is what our equipment stimulates and what is neccessary to keep the body healthy......

Learn the differences kiddies :)
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