ofthenaturevitaminCandthechemicalstructure
ofthesyntheticvitaminC.Also，whilemostsub- stancesareharmlessatverylowlevelofintake，all
substance--eventheelementsthatareessentialtolife--canbedangerousifyouoverdothem.Takewaterforexample.Sixoreightglassesadaywillkeepyourbodyingoodfluidbalance.Butyoucanalsobedrown
init.Somepeoplearguethatindividualsvarygreatly
intheirneedfornutrients，itcannotnecessarilybestatedanygivenamountistoomuch;thatisall
relative.Butsincethereislittlesolidinformationonwhatistheoptimalintakeofanyessentialnutrientinhealthyindividuals，itwouldbeimpossibletogiveguidelinesthattaketheseproportionalneedsintothe
account.Justaswithotherdrugs，therelationto
differentvitamindosagesvaries，withsomepeoplebetterablethanotherstotoleratelargeamounts.Whilewedoknowthatveryspecificallywhatthetoxiclevel
