Americans secretly modified human DNA

Leading US scientists have secretly carried out extensive work by altering the DNA of human embryos, which could lead to the creation of "designer babies". Proponents of these games with the human species considered that the technique could bring a revolution in medicine, allowing scientists to prevent genetic hereditary diseases and significantly reduce the chances of transmission.

However, the treatment has caused controversy, and critics say tampering with human code is dangerous and unacceptable.

It is believed that American scientists have conducted research on the egg cells taken from a woman who suffers from a hereditary disease - ovarian cancer - to explore the possibility of eventual changes in gene expression and thus create an embryo that does not have this hereditary disease. The work was published last year by Luan Yang, a scientist who works in the laboratory of the famous geneticist George Church.

Professor Church is insisted that everything is in the experimental stage and added that the experiments didn't carried out on people. It is believed that a several laboratories working on changing the DNA of human embryos, which means that scientists can attempt to change the personality of people like improving physical predisposition and intellectual abilities.

Professor John Parrington, from Oxford University said that this discovery he had expected, but not so early and it's very effective and beneficial treatment.

However, there are those who warn of the potential dangers of altering the genome of human embryos. It may have unforeseen consequences for future generations and that makes him dangerous and unacceptable.