Your Chronological Age and Biological Age Are Probably Not the Same Number

Two people born on the same day can have dramatically different health profiles at age 45. One has the cardiovascular fitness and metabolic markers of a 35-year-old. The other has those of a 55-year-old. Their chronological age is identical. Their biological age is a decade apart. Understanding the difference is not just interesting -- it is actionable. What biological age measures Biological age is an estimate of how old your body actually is based on physiological markers, as opposed to how many years you have been alive. It attempts to quantify the rate at which your body is aging by looking at measurable indicators of health and function. The most commonly used markers include: Resting heart rate : A trained heart beats slower because it pumps more blood per beat. Resting heart rates of 50-60 bpm are associated with younger biological ages. Above 80 bpm at rest is associated with accelerated aging. Blood pressure : Systolic pressure below 120 and diastolic below 80 is optimal. Each