Healthspan refers to the length of time a person lives in good health—free from serious disease or chronic disability—as opposed to simply living a long life (which is referred to as lifespan).
In other words, healthspan is about quality of life, not just quantity. It focuses on:
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Maintaining physical and mental function as you age
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Preventing or delaying age-related diseases (like heart disease, diabetes, or Alzheimer’s)
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Staying independent and active for as long as possible
The goal of increasing healthspan is to help people feel well and live fully for more of their lives, not just live longer.