Board Thread:General Discussion/@comment-71.1.235.131-20171022191243/@comment-25396609-20171022195143

WC-83 wrote: Perhaps her projection is like a microwave or other form of radiation, able to go through many barriers not specifically designed to stop it.

Now that I think of it, I wonder if using her semblance is increasing her risk of a brain tumor. @Grey I doubt it would cause a brain tumor, but she has mentioned getting headaches when she overuses it; so there may be some physical strain.