  This paper addresses the following issues: (1) the possible existence of
macroscopic traversable wormholes, given a noncommutative-geometry background,
and (2) the possibility of allowing zero tidal forces, given a known density.
It is shown that whenever the energy density describes a classical wormhole,
the resulting solution is incompatible with quantum field theory. If the energy
density originates from noncommutative geometry, then zero tidal forces are
allowed. Also attributable to the noncommutative geometry is the violation of
the null energy condition. The wormhole geometry satisfies the usual
requirements, including asymptotic flatness.
