Peter Attia· MD
so um of of adults so there has been uh more movement at the extreme end then than at the mean yes
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so um of of adults so there has been uh more movement at the extreme end then than at the mean yes
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yeah i think the earliest measures we have are like something like i don't remember the exact figure but it's like 12 of us adults had obesity at that time something like that in the earliest measures
and that's what happens when a distribution spreads out which is what happened if you look at the the distribution of bmis it used to be a lot tighter and it just got less tight so there are still people who are lean um there are still people in every BMI category just like there used to be but since it is spread out you get a disproportionate increase at extreme values
so um of of adults so there has been uh more movement at the ex stream end than than at the mean yes and um and that's what happens when a distribution spreads out which is what happened if you look at the the distribution of bmis it used to be a lot tighter and it just got less tight so there are still people who are lean um there are still people in every BMI category just like there used to be but since it is spread out you get a disproportionate increase at extreme values what about underweight what was if you happen to know what was the fraction of underweight in 1900 if we would Define that say BMI below I don't know what underweight is is it below 18 or below 20 and then how has that changed over time yeah typically the cuto off is 18.5 and I don't know the answer to your question I think it was higher than it is today uh but I'm not sure about that
yeah I think the earliest measures we have are like something like I don't remember the exact figure but it's like 12% of us adults had obesity at that time something like that in the earliest measures
and actually the most extreme changes happened in more severe obesity so you see very very little very very few people had bmis over 35 in the earliest measures and then now it's like it's it's something like nine or 10% today so — of of adults so there has been uh more movement at the ex stream end than than at the mean yes