Eating less food might help female mice keep more of their egg cells for longer by slowing down certain processes in their bodies, which could let them have babies later in life.

When female animals eat less food, it makes it harder for them to have babies because their bodies stop sending the right signals for egg release.

Eating fewer calories helps older female mice have healthier eggs by boosting a protein called SIRT3, reducing cell damage, and preventing egg division problems, which makes babies more likely to survive.