The answer is Progeria Progeria, also known as Hutchinson-Gilford progeria syndrome (HGPS), A rare genetic condition that causes a child's body to age fast. Most kids with progeria do not live past the age of 13. The disease affects both sexes and all races equally. It affects about 1 in every 4 million births worldwide.
And it’s because of the nucleus membrane’s lamin A molecules don’t work properly
Basically genetical disease and there is no as such cure possible till date