The genes in mitochondria, which are the powerhouses in human cells, can cause fatal inherited disease. But replacing the bad genes may cause other health problems.
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"It would be disingenuous of me not to suggest that the link between the ... recommendations and insurance coverage hasn't put an additional focus on our work," says Dr. Michael LeFevre.
Courtesy of Michael LeFevre
The U.K. could become the first country to legalize the production of a human embryo from three donors. Here, the freezing platform for an embryo, top, also known as a straw, is seen at an in vitro fertilization lab.
Oklahoma Gov. Mary Fallin issues a statement to the media after the execution of Clayton Lockett. Oklahoma Secretary of Safety and Security Michael C. Thompson stands behind her at the Oklahoma State Capitol in Oklahoma City.
For someone with a serious injury, it's not just a matter of getting in the door at the closest hospital, but getting in the door at the right hospital, says Dr. Arthur Kellermann, an emergency medicine specialist.
Say hello to your microbiome, Rob Stein. Our intrepid correspondent decided to get his gut bacteria analyzed. Now he's wondering if he needs to eat more garlic and onions.