  In this note we show that Newton-Schr\"odinger Equations (NSEs)
[arXiv:1210.0457 and references therein] do not follow from general relativity
(GR) and quantum field theory (QFT) by way of two considerations: 1) Taking the
nonrelativistic limit of the semiclassical Einstein equation, the central
equation of relativistic semiclassical gravity, a fully covariant theory based
on GR+QFT with self-consistent backreaction of quantum matter on the spacetime
dynamics; 2) Working out a model [see C. Anastopoulos and B. L. Hu, Class.
Quant. Grav. 30, 165007 (2013), arXiv:1305.5231] with a matter scalar field
interacting with weak gravity, in procedures analogous to the derivation of the
nonrelativistic limit of quantum electrodynamics. We conclude that the coupling
of classical gravity with quantum matter can only be via mean fields, there are
no $N$-particle NSEs and theories based on Newton-Schr\"odinger equations
assume unknown physics.
