overall if the standard of a whole population goes up, then yes the underweight weight also goes up
that means palm would have to up his weight from 30yrs ago to now to be maintain underweight status, if he din up his weight hed be less than underweight now
In todays world perfection is demanded. So you need to be the ideal weight for your height. Smarter people will realize though, that if a person is particularly muscular that his weight will reflect that.