Using Mice to Examine p53 Functions in Cancer, Aging, and Longevity

Researchers reviewed mouse studies that changed p53, a protein that helps stop damaged cells from becoming cancerous. Some mice with extra p53 activity developed fewer tumors, or abnormal cell growths. However, stronger p53 activity sometimes harmed healthy tissues and led to signs of earlier aging. Other mouse experiments found cancer protection without obvious faster aging, so the results were mixed. These were animal studies, not tests in people, and no humans participated.

What this means for you: This does not show that changing p53 will help people live longer. You can ignore supplements or treatments claiming to boost p53 for longevity unless human trials support them.