Olshansky, Jay
\ˈoʊlʃənski\, \ʤeɪ\
An American bio-demographer and gerontologist. He argues that human longevity has already reached its upper limits and has little room for further gains.
He believes that efforts should instead be focussed on compressing the “red zone” – the end of life period associated with frailty and disease and thereby extending healthy life expectancy.