Hallmarks of aging: A user's guide for comparative biologists

Researchers reviewed existing studies on aging in humans and other animals. They used the “hallmarks of aging,” a list of recurring biological changes such as DNA damage and failing mitochondria, the parts of cells that make energy. The authors compared how well each hallmark is supported across species and noted that some findings may not apply equally to humans. This was a review, not a study with participants or a treatment test.

What this means for you: This paper is useful for understanding how scientists organize aging research, but it does not prove that any supplement, diet, or treatment will slow aging. You can ignore claims that use this framework alone as proof that a product works.