One possibility not mentioned is the removal of an environmental contaminant: 1980 corresponds to phase-out of leaded gasoline. Could it be that lead was making us (and all the animals) both dumber and skinnier?
I don’t think that explains why the US has a stronger obesity epidemic then France.
One possibility not mentioned is the removal of an environmental contaminant: 1980 corresponds to phase-out of leaded gasoline. Could it be that lead was making us (and all the animals) both dumber and skinnier?
I don’t think that explains why the US has a stronger obesity epidemic then France.