If I was living in Roman times I'd have been dead for 30 years or so, the only reason I'm alive is modern medicine.
Don't even need to go that far... over here, the life expectancy has risen by more than 10 years since the start of the 1970s. The average length (I mean - ahem - tallness 😁 ) of men has gone up by 5 cm in that time. Around 1867, 8% percent of the population died of famine.