My thyroid forum I post at talks about selenium for thyroid. I have read it online before but listening to all of them discuss it has brought it back to the forefront for me.

So many, but most information from doctors. I will look.

Becareful with Selenium
 

Old post but I'll chime in since it might help some future reader.

It's okay to consider a little selenium but I would be careful.

I have recently researched this a little. I have recently gone through chemotherapy and have chemo induced neuropathy. With the chemo my immune system is low. I have an integrative doctor who was trained in both traditional western "school" medicine and alternative medicine who is looking at the "whole picture. She wants to help bring my entire immune system up slowly and so she ran a slew of tests to look at the whole picture. She says my selenium is low and wants to slowly bring it up to help my whole immune system. She also doesn't like doing it with supplements and suggest I eat 2-3 Brazil nuts a day.

I then read a little about Selenium in general and Brazil nuts in particular and I concur that you really must be careful not to over do it. Brazil nuts are a quandary in that they have some wonderful nutrients but too many can be toxic, unless you are a 20th generation native to the part of the amazon where they grow naturally and have built up a system that can handle eating them profusely when in season.

If you google you can find lots of articles on this and lots of warnings. Also google "foods high in selenium" and incorporate them into your diet in moderate amounts. World's Healthiest Foods is a reputable, trustworthy, science-based website.

So I personally would recommend (and am currently myself) get your Selenium naturally and patiently in small doses over time and I really wouldn't over do it.

On a different vitamin, I erroneously overdid dosage and really regretted it later.

It took millions of years for our food and our bodies to evolve into their current form. Scientists don't know all the things that are in selenium-rich foods that are there to help us to absorb the selenium - so go for the natural food source if it does the job rather than some man made up pill. Also have your doctor test and retest and keep an eye on your levels over time.