Bieler began using diet as the main tool for himself and , increasingly , for treating his patients .
Levinson 's cure worked , and he is credited as the person who first aroused Bieler 's interest in diet therapy .
Bieler began using diet as the main tool for himself and , increasingly , for treating Bieler 's patients .
Levinson 's cure worked , and he is credited as the person who first aroused Bieler 's interest in diet therapy .