 As late as 1967, Hauser was dismissed as a crank and compared with such obvious charlatans as Dudley J. LeBlanc, promoter of the cure-all Hadacol.Some medical health experts have been critical, for example it has been noted that Hauser was a promoter of the Bates method, which is widely regarded as quackery.However, others consider him to be a founder of the natural food movement who was ahead of his time.