Neithertoolittle,nortoomuch 　　Manypeoplebelievethatsugarisnothealthyforyou.Othersaythatsugaristhebestsourceofenergy.Somepeoleeatmeatwhileothersarevegetarians.Whoisright?What'syouropinion? 　　Theimportanceofhavingavarietyoffoodinones'sdietisquitclear.Scientistsadviseabalanceddiet.Abalanceddietisonewithfoodfromeachofthefivefoodgroups:wholegrainsorwheat,vegetables,fruit,milkanddairyproducts,andmeatandbeans.Scientistswarmusthatalackofcertainkindsoffoodisdangerous,especiallyforchildren.Children'sbodiescannotgrowproperlywithoutabalanceddiet.Ontheotherhand,havingtoomuchofanything,includingone'sfavouritefood,isequallydangerous.Theysay,forexample,peoplewhoeatlotscheeseburgersandmilkshakeswillincreasetheirriskofheartattacks. 　　Therefore,wecannotdecidewhattoeatwithoutfirstdoingintelligentresearch.Scientificinformationaboutthebodiesneedsforfats,proteins,mineralsandvitaminscanalsohelpusdecideontherightchoiceandtherightamount.Itcanalsohelpustellfactsfromwrongopinions.