b'Depression -Depressionisadiagnosisgiventosomeonewhoisexperiencingalowmoodandfindsithardorimpossibletohavefunorenjoytheirlives.Asthisaffects280millionpeopleintheworldwewillexplorethisinmoredetailinaseparatesection.Eating disorders -Aneatingdisorderisadiagnosisgiventosomeonewhohasunhealthythoughts,feelingsandbehavioursaboutfoodandtheirbodyshape.Thetermcoversawiderangeofproblemsincludingstarving(anorexia),bingingandpurging(bulimia)andbingeeating.Thereasonsandcausesbehindeatingdisordersarevariedandcomplexandmedicalhelpshouldalwaysbesought.Obsessive-compulsive disorder -Thistermisoftenusedtorefertosomeonewholikesthingstidyandorganisedbutweneedtostopmisusingthetermasthisisaseriousanddistressingmedicalcondition.'