  We show that the inclusion of axion emission during stellar evolution
introduces important changes into the evolutionary behaviour of AGB stars. The
mass of the resulting C/O white dwarf is much lower than the equivalent
obtained from standard evolution. This implies a deficit in luminous AGB stars
and in massive WDs. Moreover the total mass processed in the nuclear burning
shells that is dredged-up to the surface ($3^{rd} D_{up}$) increases when axion
emission is included, modifying the chemical composition of the photosphere. We
conclude that the AGB is a promising phase to put constraints on particle
physics
