Three people to make the same baby

Two parents can be a legal conundrum, and now three parents!

This is a form of In-vitro Fertilization, but here the human produced is also Genetically Modified!

I wonder what quality diet would be suitable for them? Pun intended.

Babies made from three people approved in UK

Excerpts:

"The first such child could be born, at the earliest, by the end of 2017.

Some families have lost multiple children to incurable mitochondrial diseases, which can leave people with insufficient energy to keep their heart beating.

The diseases are passed down from only the mother so a technique using a donor egg as well as the mother's egg and father's sperm has been developed."

 ...

"Already, bioethicists have started to argue that allowing mitochondrial replacement means that there is no logical basis for resisting GM babies, which is exactly how slippery slopes work."