Like a machine, everything in our bodies is interconnected—and the bits and pieces eventually malfunction. Dr Berndt Kleine-Gunk, a gynaecologist and head of the German Society for Anti-Aging Medicine, suggests we think of the human body as a basket of apples in which one rotten specimen can infect the others. In medical terms, these ‘rotten apples’ are called senescent, or zombie, cells, because they continue to age but stop dividing and refuse to die. As they accumulate, they contribute to everything from age spots to cancer.
In other words, rather than cells that divide and spark health, “we’ve got zombie cells eliminating it,” says Kleine-Gunk. “That’s why scientists are looking at what happens when zombie cells can be removed from the body before they cause damage.”
With 727 million people over the age of 65 in the world—a number expected to jump to 1.5 billion by 2050— scientists are making significant strides in the field of gerontology, with better diagnostics and more advanced treatments. Kleine-Gunk points to the number of startup companies working on drugs that either suppress the damaging molecules that zombie cells secrete or kill them outright.
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