Is an interdisciplinary field that aims to understand, at the molecular level, the relationship between biological aging and age-related diseases and other conditions that diminish our quality of life. Because aging is the major cause for most common chronic diseases and conditions, an understanding of the role of aging in the onset and progression of disease should open up new avenues for prevention, amelioration, and cure of multiple chronic conditions through intervention in their underlying cause — aging itself. Geroscience is therefore a school or focus of biogerontology, but its research spans multiple disciplines including molecular biology, neuroscience, protein chemistry, cell biology, genetics, endocrinology, pharmacology, mathematics, and others. The common goal is to understand the role of aging in age-related loss of quality of life and susceptibility to disease.
Diseases of aging are arguably the single greatest threat to human health in the 21st century. Statistics from numerous sources highlight the fact that age-related diseases increasingly represent a true worldwide emergency: for example, by 2030 the national healthcare bill in the US is projected to reach four trillion dollars, with fully 50% of that being required for Americans 65 years and older .