Selenium is so undervalued today. It is an antioxidant that binds with heavy metals making them less dangerous to us.
Se is needed to convert T4 to the more active T3 thyroid hormone. It also provides antioxidant protection for the thyroid gland.
The supplements you mentioned are some of the best for fighting or avoiding cancer, however you should consider the positives and negatives of various *forms* of each of them.
Sadly I don't have the reference for this, but it probably is either from Life Extension magazine--lef.org, or wellnessresources.com.
"A gold standard study sponsored by the National Cancer Institute involving 1300 people (J.A.M.A. Dec.1996) found 200 mcg of high selenium yeast daily can reduce the all cancer incidence rate by 39% and the overall cancer death rate by half. Prostate cancer incidence was reduced 63%. Colon cancer incidence was reduced 58%. Lung cancer incidence was decreased 46%. All carcinoma incidence was reduced 45%"
In Episode 10 Chris discusses the RCGG Onconomics Plus Test, also known as oncostat, or the Greek test. They test your cancer and tell you which natural and Pharma substances will likely be helpful in the fight against your particular cancer.
Consider taking mixed tocopherols and or mixed tocotrienols or a combination of those forms of vitamin E. Taking just the cheap alpha form most commonly found in pharmacies is unnatural and can lead to lower levels of the gamma form.
If I had time I'd share links to studies on some esoteric forms of vitamin E causing apoptosis--natural cell death--in cancer cells.
There is SO much information out there on supplements and diets as alternative or adjunct treatments for cancer. Sadly the best information on this is not likely to come from the US but from overseas. Pharma has a stranglehold on scientific development for the benefit of their profits, not our health.
This guy lost both parents and several other relatives to cancer. He goes around the world interviewing researchers. Most are natural or semi-natural. One, Rigvir, is an approved natural medical treatment in Eastern Europe and is covered by insurance there. It is available in Mexico https://thetruthaboutcancer.com/
This long-time editor of the New England Journal of Medicine wrote a book some years ago very critical of how Pharma corrupts studies. Remember she saw both the studies that they accepted for publication and those that were rejected. She teaches at Harvard. She's mainstream, not natural. http://www.nejm.org/doi/full/10.1056/NEJM200410073511522#t=article
Thankfully people today have alternative ways to learn. They don't have to rely on what the doctor feels is best--for profits.