In the United States, about 6 out of every 10 deaths come from chronic disease — illness that lasts a year or more, like heart disease, cancer, diabetes, or lung disease.
These deaths aren't sudden. The illness behind them usually builds for years, often quietly.
Think of ten people. For six of them, the thing that ends their life will be a condition they lived with for a long time.
One honest note: this doesn't mean all six could have been prevented, or that one habit explains it. Genes, environment, money, and access to doctors all shape who gets sick — and it adds up over a lifetime.