Scientists have recently discovered that bed bugs can carry disease. These diseases can make you ill, and there is a possibility of getting sick from a bed bug bite. When bitten by a bed bug, they feed on your blood, and some people, particularly small children or those who are anemic, can be susceptible to negative side effects from this blood loss. You'll be glad to hear, however, that there have been no proven cases of bed bugs transferring communicable diseases to a human. Phew! This may be because although they feed on human to human, like a mosquito, they cannot independently travel like a winged insect, so they are unable to reach as many humans.