the number of years that someone lives or can expect to live in reasonably good health

The centre exists to improve quality of life and to extend the healthspan of older adults. 该中心的存在是为了改善老年人的生活质量和延长他们的健康寿命。

These foods are part of the recognized healthy dietary patterns that prevent disease and increase our health span. 这些食物是公认的健康饮食模式的一部分，可以预防疾病并增加我们的健康寿命。