  The flavor singlet axial and tensor charges of the nucleon are calculated in
lattice QCD. We find $\Delta\Sigma=\Delta u+\Delta d+\Delta
s=+0.638(54)-0.347(46)-0.109(30) = +0.18(10)$ for the axial charge and
$\delta\Sigma=\delta u+\delta d+\delta s=+0.839(60)-0.231(55)-0.046(34) =
+0.562(88)$ for the tensor charge. The result for the axial charge shows
reasonable agreement with the experiment and that for the tensor charge is the
first prediction from lattice QCD before experimental measurements.
