An English hospital on Thursday became the nation's first to win authorisation to use the three-person fertility technique in an effort to prevent inherited disease. France 24 reported. Britain last year became the first country in the world to legally offer such a treatment after parliament approved legislation in December. British lawmakers voted in 2016 to allow the treatment، in which the DNA of the mother، father and a female donor are combined to create a baby. Mitochondria are structures in cells which generate vital energy and contain their own set of genes called mDNA which is passed through the mother. Mitochondrial diseases cause symptoms ranging from poor vision to diabetes and muscle wasting، and health officials estimate around 125 babies are born with the mutations in Britain every year. The first baby conceived using mitochondrial donation was born in 2016 in Mexico، where there are no rules on its use، but Britain is the first to officially authorise it. The treatment remains controversial in Britain and elsewhere، with religious leaders among its detractors.