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Global life expectancy is expected to increase an average of 4.4 years by 2040.  It projected that global life expectancy will increase an average of 4.4 years. Researchers found that health, in most instances, was forecast to improve by 2040. However, 36 health conditions were forecast to decline.

personally (imo) , I think it will decrease.

the things that cause low life expectancy is su1cide and opioids, and I feel like people are really depressed now days and things are gonna go downhill. also, all the processed foods will cause a lot of heart disease and health problems for a lot of Americans and I think that's how most of us will die, if not by su1cide or Overdosing on something