There are also a few more serious risks to be aware of: Thyroid tumors , including a rare type called medullary thyroid carcinoma, have been seen in animal studies, though its unclear how this translates to humans
Faced with an excess of iron, this bacterium activates or represses about 15% of its total genes, reflecting a global regulatory shift that includes genes related to both metal homeostasis and ROS defense
39,40 Restoration of depleted GSH concentrations in T-cells may be critical for restoration of leukocyte function
Livingstone C, Davis J, Review
This is likely because they dont see them as being effective or safe enough for commercial return, to justify the research and development costs
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