I imagine it has to do with their diet, since ultra-processed foods contain chemicals that the body mistakes for hormones and cause people to age faster. That's why those who eat this type of food, especially those packaged in plastic, can develop cancer.

In other countries, there are still local markets where food comes from the countryside and is fresher and minimally processed.

Eating something that was cooked today isn't the same as eating something that's been packaged for months or years.