Resume de l’article : On sait pourquoi les personnes très âgées sont protégées du cancer

Article summary:
A study has discovered why people over 100 years old are largely protected from cancer. The researchers found that these individuals have a high number of senescent cells, which no longer divide or grow, but are still metabolically active. These cells secrete factors that stop the proliferation of nearby cancer cells.

Answer to the question:
People over 100 years old are protected from cancer due to a high number of senescent cells that secrete factors which inhibit the proliferation of nearby cancer cells.