It sounds like science fiction, but babies with DNA from three people are now a reality!

Scientists in both U.K. and Australia have used a groundbreaking technique to prevent deadly mitochondrial diseases by replacing faulty parts of a mother’s egg with healthy mitochondria from a donor. 

The result? Eight babies born healthy, carrying DNA from their mom, dad, and a tiny bit (less than 1%) from a third person. 

It’s a stunning scientific leap that once felt far off, now offering real hope to families who had none. While still banned in places like the U.S., it’s already changing lives where it’s allowed.