Re: Thyroid treatments
Hi Hazel,
Selenium is just as important as iodine for proper function of the thyroid.
Here is a miss mach of info on selenium in relation to the thyroid. (Part 1)
Its anti-oxidant functions have now been shown to reduce the risk of many cancers as well as thyroid disease, infertility and arthritis. There is even a suggestion that selenium alters genes that cause cancer.
In 2003 a French study investigated the size of the thyroid gland compared to selenium consumption. Those with lower selenium levels in the blood had a larger thyroid, which can be a sign of goiter or thyroid disease. Researchers concluded that selenium may protect against both goiter and thyroid disease. An article in the medical journal Lancet (July 15, 2000) also commented on the importance of selenium to thyroid health, as well as fertility problems and heart disease.
Selenium—An essential trace mineral found in fruits and vegetables, selenium helps the body produce functional glutathione peroxidase, an enzyme essential for detoxification. Low dietary levels of selenium have been correlated with a higher incidence of cancer; accordingly, supplementation of this nutrient acts as a deterrent against cancer in general.
Alternative Medicine by Burton Goldberg, page 591
The Garlic Connection. It has long been noted that people who ate garlic, onion, broccoli, and whole grains had a reduced risk of cancer. It turns out that all of these foods are rich in selenium, in fact, selenium is one of the reasons that these particular foods are so healthful for us.
Antioxidants Against Cancer by Ralph Moss PhD, page 77
You need just three Brazil nuts to get the 200 micro-grams of selenium that studies have shown to have a potent anti-cancer effect. As a bonus, when you eat Brazil nuts, which grow best in the Amazon rain forest, you support the conservation of one of my favorite places on earth. So you're not only protecting your body, you're saving the environment.
Anti-Aging Prescriptions by James Duke PhD, page 90
Selenium levels show a U-shaped correlation with prostate cancer. In other words, both low and high blood levels of selenium increase risk. This simply means that we need enough selenium to maintain good health, yet too much can be dangerous. A practical compromise is to use a supplement that provides 100 I.U. of vitamin E (up to 400 I.U. would be fine), and about 50 micrograms of selenium.
20 Natural Ways To Reduce The Risk Of Prostate Cancer By James Scala PHD, page 60
Selenium is needed to produce glutathione peroxidase, an antioxidant enzyme that protects the body from free radical damage. It is also important in preventing cancer and cardiomegaly an enlargement of the heart that causes premature aging and early death.
Complete Encyclopedia Of Natural Healing by Gary Null PhD, page 11
Glutathione peroxidase destroys hydroperoxides and lipoperoxides, thereby protecting the constituents of the cells against free radical damage
Diet Nutrition Cancer by National Research Council, page 168
Selenium activates an enzyme in the body called gluthathione peroxidase that protects against the formation of free radicals—those loose molecular cannons that can damage DNA.
Another reason it seems to be difficult for Americans to get enough selenium is the processing many of our foods go through before they make it onto grocery store shelves. Mindell points out, for example, that processing wheat into white flour strips it of a great deal of its selenium. One way to get more selenium in your diet might be to eat more organically grown foods, which some studies have shown to contain more selenium as well as higher levels of beta carotene and vitamin E. These two work together with selenium in cancer prevention, according to Alternative Medicine author Burton Goldberg.
Perhaps a more surefire way to boost your selenium intake is to add supplements to your diet. Mindell advocates the use of supplements, saying, "To me, taking selenium supplements, in addition to eating selenium-rich foods, is good insurance against disease." However, for those who oppose taking pills, Dr. Andrew Weil in Ask Dr. Weil says eating just one shelled Brazil nut -- grown in the selenium-rich soil of central Brazil -- provides 120 micrograms of the mineral, getting you that much closer to the daily target of 200 micrograms.
some good dietary sources of selenium: Mushrooms, egg yolks, seafood, poultry and kidney, liver and muscle meats contain the mineral. Vegetables -- garlic, onions, broccoli, asparagus, tomatoes and others -- as well as whole grains and seeds can also be good sources of selenium.
However, because the amount of selenium in vegetables and grains depends on the selenium content in the soil in which they are grown, it can be hard for average consumers to know how much of the mineral they are actually getting in their diets. "The selenium content of food is largely dependent on the content of volcanic ash in the soil on which the food was grown, with higher volcanic ash content yielding higher selenium levels. Soil that is irrigated by seawater, such as much of California's cropland, also contains higher levels of selenium," says Sue Gebo in What's Left to Eat. Gebo adds that, in general, soil in the western United States is richer in selenium than soil in the eastern part of the country.
Selenium can be found in many of today's foods such as brazil nuts, poultry, seafood, and meats, brewer’s yeast, broccoli, garlic, kelp, molasses, onions, and various herbs are good plant sources of selenium. Oats and brown rice can also provide significant amounts, but this will depend on the selenium content of the soil in which they have been grown. Much of today’s soil has a depleted Selenium content due to over production in farming.
You can also get a selenium supplement. The recommended daily allowance is 70mcg for men and 55mcg for women. But in order to produce major benefits an amount of up to 600mcg can be taken.
Selenium deficiency used to be rare, but it is more common today due to poor diets and the over farming of soil. If you were to be deficient, symptoms would include muscular weakness and fatigue. Too much selenium on the other hand is possible. If you are taking a selenium supplement you should remember not to exceed 600mcg per day. Overdosing on selenium or selenium poisoning can cause depression, nausea and vomiting, nervousness and loss of hair and fingernails along with a breath odour.
Selenium may be useful in preventing cataracts and macular degeneration, the leading causes of impaired vision or blindness in older Americans. It is also vital for converting thyroid hormone, which is needed for the proper functioning of every cell in the body, from a less active form (called T4) to its active form (known as T3). In addition, selenium is essential for a healthy immune system, assisting the body in defending itself against harmful bacteria and viruses, as well as cancer cells. Its immune-boosting effects may play a role in fighting the herpes virus that is responsible for cold sores and shingles, and it is also being studied for possible effectiveness against HIV, the virus that causes AIDS.
When combined with vitamin E, selenium appears to have some anti-inflammatory benefits as well. These two nutrients may improve chronic conditions such as rheumatoid arthritis, psoriasis, lupus, and eczema.
A study at the University of Arizona in Tucson in 1996 found that people who took 200 mcg of selenium a day for four and a half years reduced their risk of cancer by 32 percent and their risk of death from cancer by 50 percent. It seems, though, that someone’s genes may determine whether or not selenium supplements may reduce the risk of breast cancer
The average person gets about 65 micrograms of Selenium per day. 200 micrograms is considered the optimal amount while 400 micrograms is the maximum allowable daily dose. Note that too much Selenium is highly toxic to the body.
* Symptoms of too little Selenium: Cancer, heart disease, fatigue, stunted growth, high cholesterol, compromised immune system function, liver impairment, pancreatic insufficiency and sterility.
* Symptoms of too much Selenium: Arthritis, brittle nails, bad breath, hair loss, irritability, liver and kidney problems, tooth loss, jaundice.