Are animals that have been produced by cloning healthy?
The majority of animals produced by cloning reach healthy adulthood. However, the incidence of health problems in animals produced by assisted reproductive technologies—such as cloning, in vitro fertilization, and embryo transfer—is higher than in animals produced by natural reproduction. The health problems that affect some animals produced by cloning, including malformation of the placenta and other organs, also occur in naturally conceived animals. As cloning scientists study these health problems and their prevention and treatment, they may contribute to improved veterinary care for all animals.
