Selenium/Thyroid Information Tree

SELENIUM Information Tree


Low levels may contribute to:  thyroid disease
                                              heart disease
                                              cancer
                                              immune function
                                              asthma
                                              HIV
                                              male infertility
                                              RA (rheumatoid arthritis)-
                                                         supplements at this point in time are not believed to cure RA, only that low Se is noted in the disorder.

  Thyroid:  located in neck
                 one of the largest endocrine glands
                 controls energy use
                 controls sensitivity to other hormones
                  regulates rate of metabolism
                  produces PTH (parathyroid hormone)
                            peaks approx. 8 hours after calcium ingestion
                            controls vitD conversion in kidneys
                  produces calcitonin re: calcium homeostasis (metabolism)
                  requires iodine
                  required tyrosine

                  result potential of thyroid inefficiency:
                             fatigue
                             depression
                             cardiac disease
                             lupus
                             reproductive issues
                             arthritis

                 increasing thyroid function/hormones:
                             exercise
                                  "70% of maximum heart rate...caused the most prominent changes in the amount of any                
                                               hormone values"
                                           "the rate of T4, fT4, and TSH continued to rise at 90% of maximum heart rate, the rate 
                                             of T3 and fT3 started to fall"
                                             http://www.nel.edu/26-2005_6_pdf/NEL260605A14_Ciloglu.pdf
                              food
                                   seaweed (iodine may help increase low hormone levels or aggravate high levels)
                                 
                 
     Calcium homeostasis (metabolism)
                   human body contains approx. 1kg of calcium

     Calcitonin
                    reduces blood calcium
                    stimulated by increase in serum calcium
                    inhibits osteoclast activity in bones

     Osteoclast
                      cell that removes bone tissue
                      controls amount of bone tissue
                     
 Selenium Food Sources: (often dependent on soil selenium levels)
                       liver
                       butter
                       mackerel
                       tuna
                       halibut
                       shellfish
                       sunflower seeds
                       brazil nuts
                       brewer's yeast





http://en.wikipedia.org/wiki/Thyroid
http://en.wikipedia.org/wiki/Calcium_homeostasis
http://en.wikipedia.org/wiki/Calcitonin
http://en.wikipedia.org/wiki/Osteoclast
http://www.thyroid.ca/thyroid_disease.php
http://www.google.ca/webhp?rlz=1C1_____enCA460CA460&sourceid=chrome-instant&ie=UTF-8&ion=1#sclient=psy-ab&hl=en&rlz=1C1_____enCA460CA460&site=webhp&source=hp&q=fatigue%20thyroid&pbx=1&oq=&aq=&aqi=&aql=&gs_sm=&gs_upl=&bav=on.2,or.r_gc.r_pw.,cf.osb&fp=896609a829c84a47&ion=1&biw=1600&bih=787&ion=1&pf=p&pdl=500
http://thyroid.about.com/cs/depression/a/overview.htm
http://www.nel.edu/26-2005_6_pdf/NEL260605A14_Ciloglu.pdf
http://www.stopthethyroidmadness.com/thyroid-depression-mental-health/
http://www.umm.edu/altmed/articles/selenium-000325.htm
http://ods.od.nih.gov/factsheets/selenium/
http://thyroid.about.com/library/weekly/aa072000a.htm