The zombie apocalypse is real, but it’s not the kind you imagine. Programmed cellular death, or apoptosis, clears out old or damaged cells and recycles parts for new cells. But sometimes cells don’t quite die. They become zombie cells or senescent cells. Zombie cells are caused by DNA damage, critically short telomeres, and chemical or toxic stress, including our inflammatory diet and lifestyle. They accelerate all age-related diseases: cancer, heart disease, liver disease, dementia, Parkinson’s