Serum selenium levels predict survival after breast cancer
This study suggests that a selenium level in excess of 64.4 µg//L might be beneficial for women undergoing treatment for breast cancer and that selenium supplementation to achieve this level may favorably impact the outcome. Further studies are needed to confirm this association and to evaluate the impact of selenium supplementation on breast cancer survival among women with low post-diagnostic selenium levels.
Reference: Serum selenium levels predict survival after breast cancer Breast Cancer Res Treat. 2018 Jan;167(2):591-598.
The good thing is it's quite easy to boost selenium intake in the diet, e.g. 1-2 brazil nuts daily should do it. If anyone cant find the article online just message me.