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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 thenonrelativistic limit of the semiclassical Einstein equation, the centralequation of relativistic semiclassical gravity, a fully covariant theory basedon GR+QFT with self-consistent backreaction of quantum matter on the spacetimedynamics; 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 fieldinteracting with weak gravity, in procedures analogous to the derivation of thenonrelativistic limit of quantum electrodynamics. We conclude that the couplingof classical gravity with quantum matter can only be via mean fields, there areno $N$-particle NSEs and theories based on Newton-Schr\"odinger equationsassume unknown physics.

Newton-Schr\"odinger Equations are not derivable from General Relativity + Quantum Field Theory