What’s good for the head may be bad for the sperm, says a new study in Fertility and Sterility. Half of the users of Paxil, out of 35 men tested, showed DNA damage to their sperm. DNA damage in turn would result in decreased fertility.The study author, Dr. Peter Schlegel, M.D., thinks that all selective serotonin reuptake inhibitors (SSRIs) may have this effect since they work in similar ways. Hope-to-be dads should discuss their use of these drugs and the possibility of temporarily stopping their use while trying to get pregnant with their partner.