The link between inflammation, cellular senescence, aging, and cancer is a complex relationship, but a new study sheds light on how these four interact.

The light and dark side of inflammation and cellular senescence

Cellular senescence is a protective mechanism that helps us to stay healthy and avoid cancer by removing damaged and aged cells from the cell cycle while preventing them from creating damaged copies of themselves. Senescent cells are disposed of via a self-destruct process known as apoptosis.

Whenever the topic of increasing human lifespan is discussed the concern is sometimes raised that a longer life would mean a life spent frail and decrepit. This is sometimes known as the Tithonus error and shows a fundamental misunderstanding of the aims of rejuvenation biotechnology. The concern is based on the ancient Greek myth of Tithonus which might be thought of as a cautionary tale warning seekers of an eternal life of its alleged inherent dangers.

The myth of Tithonus in brief

Tithonus, the story goes, was a mere mortal who was in love with Eos, the beautiful titan of the dawn. His feelings were requited, but, unfortunately, their idyll was not destined to last. Being a titan, Eos was also a deity and thus immortal, unlike Tithonus, who one day would die of old age if not of some other cause. Eos thus turned to Zeus and asked him to make Tithonus immortal as well. Zeus granted Eos’ wish, but even this did not solve the two lovers’ problem; the father of the gods had granted Tithonus immortality, not eternal youth.