  We study primordial nucleosynthesis in hypothetical hot regions that could be
formed by the primordial density inhomogeneities. It is shown that the regions
survived up to the present times acquire an abnormally high metallicity. This
conclusion holds in wide range of initial parameters of such regions. We
considered the thermonuclear reaction rates and estimated abundances of
deuterium and helium-3 and -4 inside these areas. It has been established that
all baryons tend to form helium-4, which is the thermonuclear link in the chain
of formation of heavier elements.
