Colorful illustration of a man and a woman in a gym and looking at a smartphone recording progress.
2024-11-15 724词 中等
By one calculation, based on the World Health Organization’s healthy life expectancy indicator, an American who expects to live to 79 might first face serious disease at 63. That could mean 15 years (20 percent of life) lived in sickness. Indeed, aging is the biggest risk factor for cancer, heart disease and dementia.
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