' s ▁Diet ▁Guide . ▁ ▁Cal la han ▁was ▁a ▁health ▁column ist ▁for ▁Par ents ▁and ▁Mer ed ith ’ s ▁M ature ▁Out look . ▁She ▁was ▁also ▁a ▁Senior ▁Editor ▁at ▁Tu ft s ▁University ▁Health ▁Let ter ▁and ▁wrote ▁for ▁the ▁May o ▁C lin ic ▁Health ▁Let ter . ▁She ▁also ▁wrote ▁for ▁Red book , ▁Re ader ’ s ▁Dig est ▁and ▁Better ▁Hom es ▁& ▁Gard ens . ▁She ▁contributed ▁reci pes ▁to ▁the ▁first ▁edition ▁of ▁E at , ▁Dr ink ▁and ▁Be ▁Health y : ▁The ▁Harvard ▁Medical ▁School ▁Guide ▁to ▁Health y ▁E ating . ▁ ▁References ▁ ▁External ▁links ▁ ▁Category : L iving ▁people ▁Category : American ▁women ▁writers ▁ ▁Category : Year ▁of ▁birth ▁missing ▁( l iving ▁people ) ▁Category : James ▁Be ard ▁Foundation ▁Award ▁w inners ▁ ▁Category : D iet iti ans <0x0A> </s> ▁L agr ang ian ▁may ▁refer ▁to : ▁ ▁Mathemat ics ▁ ▁L agr ang ian ▁function , ▁used ▁to ▁solve ▁const rained ▁minim ization ▁problems ▁in ▁optimization ▁theory ; ▁see ▁Lag range ▁multip lier ▁ ▁L agr ang ian ▁relax ation , ▁the ▁method ▁of ▁approxim ating ▁a ▁difficult ▁const rained ▁problem ▁with ▁an ▁easier ▁problem ▁having ▁an ▁en larg ed ▁feas ible ▁set ▁ ▁L agr ang ian ▁dual ▁problem , ▁the ▁problem ▁of ▁maxim izing ▁the ▁value ▁of ▁the ▁L agr ang ian ▁function , ▁in ▁terms ▁of ▁the ▁Lag range - multip lier ▁variable ; ▁See ▁D