Heard on the Lifespan podcast that recent studies of twins suggest genetics determine about 20% of your longevity, the rest is all environment / diet / lifestyle / stress etc.
I hope that's not been disproven by newer studies that I haven't heard about? Almost all of my grandparents and parents have already died at (much) younger than average age, and I am really hoping the science about this is right otherwise its not looking good for me.
This is a personal anecdote of mine:
I lived in 3 nations: Sardinia ( hometown ), London and Vilnius. I do a lot of running and I love collecting data, something I noticed is that every time I go back to my hometown my VO2 max starts skyrocketing, after training as little as 3 weeks in my hometown it goes up by more than 10 points, when I go back it starts declining slowly until it goes back to slightly above the value when I left.
I do believe there must be something special about the environment, I do continue working from home when I'm in my hometown to stay longer, so it is not an holiday effect, my diet actually goes worst when I go back home because I go a lot to restaurants that I missed. And even with worst diet my fitness improves fast ( I run faster with same HR ( even for a while when I'm back ), VO2 and race predictor improves drastically), my stress goes down and my sleep score almost maxes out ( 98/100 )
I did leave the first time ( for London ) for work, came back 3 years later but had to leave again because my wife had trouble find a job in Sardinia ( she doesn't speak Italian ), maybe we will go back to Sardinia in the future when both our careers will be fully remote
https://jamanetwork.com/journals/jama/article-abstract/27561...
I once confessed to a friend that I did not like my apartment being encircled with equidistant 5G towers due to possible standing waves, and he (probably rightfully) scoffed at me
At least we <<think>> of them and <<plan>> for them now.
Some stuff we can analyze based on similar materials, technologies, and we can extrapolate. We can even design tests to age them and see what happens.
There's a reason everything is more complex these days, because we're starting to add a magic word to everything: <<sustainability>> (i.e.: does it kill us directly or or does it kill the environment around us, ergo killing us indirectly?).
Ignoring this aspect would mean that we assume humans never learn, which is provably false.