  We perform an exploratory study of higher twist contributions to deep
inelastic scattering. We estimate the size of two major sources of higher
twist, namely absorptive corrections and the vector meson dominance (VMD)
contribution. We find that they give a sizeable higher twist component of F_2.
For example at x = 0.01 it is about 8% (17%) at Q^2 = 10 GeV^2 (4 GeV^2),
reaching up to 27% at x = 10^{-4} and Q^2 = 4 GeV^2. At the smaller x value the
largest contribution comes from absorptive corrections, while at the larger
values of x the VMD term dominates.
