Mae cymunedau pobl lesbiaidd, hoyw, ddeurywiol a thrawsrywiol (LGBT+) yn profi anghydraddoldeb anghymesur mewn pob math o ffyrdd, gan gynnwys mynediad at wasanaethau iechyd; bwlio, gwahaniaethu a throseddau casineb; iechyd meddwl gwaeth; a lefelau boddhad cyffredinol mewn bywyd. Mae’r anfantais hon yn dwysáu ymhellach pan fydd yna nodweddion gwarchodedig eraill hefyd yn wir am yr unigolion hyn, gan gynnwys oedran, hil, rhyw, rhywedd, crefydd ac anabledd.
LGBT+ communities experience disproportionate inequalities across a wide range of issues, including access to health services; bullying, discrimination and hate crime; poorer mental health; and overall life satisfaction levels.  This disadvantage is further compounded when the needs and vulnerabilities of being LGBT+ intersect with other protected characteristics including age, race, sex, gender, religion and disability.