So you’re wondering about height and life expectancy? With all variables controlled, height is correlated with lower life expectancy. However, this does not explain the full causation. Shorter height is pretty well understood to cause less illness in older age. However, only possession of certain genes such as the Methuselah gene, which causes less of a particular growth growth hormone, insulin-like growth factor 1 (IGF1), is definitely a cause of greater life expectencies.
Also, as it turns out, healthy birth conditions have a stronger effect on life expectancy than adult lifestyle variations.
Finally, due to the number of spurious variables involved, you can’t use height as the sole variable for your own life expectancy assessment. So, as we might say, don’t worry about being too tall.
20180816/DuckDuckGo height correlated life expectency
20180816/http://www.slate.com/articles/health_and_science/science/2013/07/height_and_longevity_the_research_is_clear_being_tall_is_hazardous_to_your.html
20180816/https://health.howstuffworks.com/wellness/aging/aging-process/short-people-live-longer.htm