  A recent proposal asserts that gravitational forces arise due to an
interaction between matter and vacuum electromagnetic zero-point radiation. The
present analysis demonstrates that forces induced on matter by zero-point
radiation arise in addition to gravitational forces. It is argued that
zero-point radiation should be red-shifted near large gravitational sources
while remaining essentially undetectable within freely falling reference
frames. On this basis, an effective weight of an observer stationed near the
surface of the Earth is derived for the case when zero-point radiation is
present.
