“…The increasing dimension of LGBT+ population looks undeniable, whether leaped by a real growth of this group or derived from a more confident report of their sexual identity, due to more tolerant attitudes toward LGBT+ communities (Johnson et al, 2001;Sharp, 2002), as showed by a clear evolution of Americans' views during the past 40 years (figure 1). On the other hand, despite the obstacles in accurately measure LGBT+ dimension, as confidential issues regarding surveys (Gates, 2017;Poux, 1998), methodology chosen and wording or questioning of the sexual orientation (Stange et al, 2019), and regardless the different statistics available, a continuous growth is generally accepted. This segment is generally assumed to account for 5-10% of the total population and it is estimated to increasing in most of the countries, with a 2.9 percent growth worldwide, between 2016 and 2018 (tables 1 and 2).…”