Read the story here. Advertise at Before It's News here.
Profile image
Story Views
Last Hour:
Last 24 Hours:

Chemicals Found in Supplements, Cancer Therapies, Endocrine-Disrupting Can Alter Thyroid Function (Video)

% of readers think this story is Fact. Add your two cents.


by N.Morgan

The effects of medications, supplements, excessive iodine intake and other exogenous substances including endocrine-disrupting chemicals can influence multiple thyroid effects that clinicians should recognize, including thyroid dysfunction and altered thyroxine absorption, according to a speaker at the AACE Annual Scientific and Clinical Congress.

Many commonly used drugs and popular over-the-counter supplements, as well as newer cancer treatments such as immune checkpoint inhibitors, can interfere with thyroid function test measurement and thyroid hormone metabolism, disrupt the thyroid axis and even trigger autoimmune thyroid disease, Gregory A. Brent, MD, professor of medicine and physiology in the division of endocrinology at the David Geffen School of Medicine at UCLA, said. Popular OTC dietary supplements such as biotin, a water-soluble vitamin often marketed for hair and nail growth, can interfere with a range of thyroid assays that rely on the interaction of biotin and streptavidin, Brent said.

“Biotin, a nutritional supplement used by many, can interfere with thyroid function tests and other hormone assays,” Brent told Endocrine Today. Patients who have ingested large amounts of biotin may have abnormal test results that look like thyroid disease, but the disease is not present.”

Copper Home Page


Humic Fulvic

Ultra Curcumin

In these patients, cessation of biotin for 1 to 3 days can rapidly reverse the interference and thyroid function tests should return to normal, Brent said.

Other commonly prescribed therapies, such as glucocorticoids, dopamine or the vitamin A derivative bexarotene, can inhibit or block thyroid-stimulating hormone release or suppress pituitary TSH-beta promoter, Brent said.

Thyroxine absorption

Several agents and conditions have an impact on levothyroxine therapy and the interpretation of thyroid tests, Brent said, including common drugs like proton pump inhibitors, ferrous sulfate and calcium salts, which can interfere with drug absorption. The food or drink a patient consumes with the levothyroxine therapy — for example, milk and coffee — can also impact absorption, he said.

“Thyroxine is best absorbed in an acidic environment, so anything you do that raises the gastric pH will affect the dissolution of the levothyroxine tablet,” Brent said.

Additionally, Brent said, many patients have altered thyroxine absorption, but may also have poor or erratic adherence. A levothyroxine absorption test can identify patients with true absorption problems, he said.

Cancer treatments, thyroid dysfunction

Cancer treatment, particularly the newer immune checkpoint inhibitors, is associated with a wide range of endocrine disorders, and the thyroid is the most commonly affected, Brent said.

We have an affiliate program designed for content creators and Affiliate marketers, who would like to sell this product, please click here for affiliate program details. Our affiliate program is designed to help you monetize your screen time.


Stories Contributed by N. Morgan


Before It’s News® is a community of individuals who report on what’s going on around them, from all around the world.

Anyone can join.
Anyone can contribute.
Anyone can become informed about their world.

"United We Stand" Click Here To Create Your Personal Citizen Journalist Account Today, Be Sure To Invite Your Friends.

Please Help Support BeforeitsNews by trying our Natural Health Products below!

Join our affiliate program and earn extra money by sharing with friends and family or by posting on your social media.

Order by Phone at 888-809-8385 or online at

Get our Free Ebook, "Suppressed Health Secrets"  with  Natural Cures THEY don't want you to know!

APeX - Far superior to colloidal silver! Destroys Viruses, Bacteria, Pathogens with Oxygen plus Silver!

Supreme Fulvic - Nature's most important supplement! Vivid Dreams again!

Ultimate Curcumin - Natural pain relief, reduce inflammation and so much more.

MitoCopper - Bioavailable Copper destroys pathogens and gives you more energy. (See Blood Video)
Oxy Powder - Natural Colon Cleanser!  Cleans out toxic buildup with oxygen! 
Organic Hemp Extract (CBD) - Full Spectrum high CBD (3300mg) hemp extract eases stiff joints, relieves stress and more!
Nascent Iodine - Promotes detoxification, mental focus and thyroid health.
Smart Meter Cover -  Reduces Smart Meter radiation by 96%!  (See Video)

FINAL WARNING!  Diseases are EXPLODING!  Watch this Video about APeX and You'll THROW AWAY Your Colloidal Silver!  APeX destroys Viruses, Bacteria and other Pathogens with the power of Oxygen PLUS Silver!  Nobody else has a product like THIS!   See why the inventor hasn't been sick in 16 years and why you'll never hear about it on the FAKE NEWS!  Get some now and tell your friends about it too so we can reach more people!  

APeX Interview - Superior to Colloidal Silver from Lee Canady on Vimeo.

Learn about APeX Here and Get the 50 Page Report in PDF format.   Call us at 888-809-8385 to order by phone.

Report abuse


    Your Comments
    Question   Razz  Sad   Evil  Exclaim  Smile  Redface  Biggrin  Surprised  Eek   Confused   Cool  LOL   Mad   Twisted  Rolleyes   Wink  Idea  Arrow  Neutral  Cry   Mr. Green

    Total 1 comment
    • Slimey

      Hello Angle#3,

      Charlie here. Phew, you got me worried there. I called my doctor up and said I eat lots of doughnuts and would that interfere with my thyroid test? He laughed and said, don’t worry Charlie, doughnuts are not considered a supplement.

      I laughed when he hanged up because we all know the truth about doughnuts. Damn! Best supplement around. :lol: :lol:

      Good for the mind – good for the body – good for your thyroids. :wink: :wink:


      Charlie (I sent my doctor a box labeled DOA. Doughnuts On Arrival) :lol: :lol:

    Load more ...




    Email this story
    Email this story

    If you really want to ban this commenter, please write down the reason:

    If you really want to disable all recommended stories, click on OK button. After that, you will be redirect to your options page.