Dayna Touron, professor of psychology and gerontology faculty affiliate, is among the scientists who told the Wall Street Journal that how old you feel reveals a lot about your health.

To assess your subjective age, start by asking: How old do I feel? You can ask the question on any given day or in specific situations, such as when you are with younger people.

— Dr. Dayna Touron,
Psychology Professor and Gerontology Faculty Affiliate