The Living Force
One way to test if there is any ELF blocking is to wrap an electrometer in silk and see if it responds to a charged object.
I am pretty sure that this test would show no effect (although I haven’t done it, to be fair). But if it is negative, that in my mind doesn’t preclude that silk has a beneficial effect on radiation, maybe by an effect we don’t understand well, maybe by somehow “modulating” the signal in a way that its harmful effects are somehow mitigated.
Just a hunch!