From the piece:
Authors said they were not surprised to find that homosexuals who had disclosed their sexual orientation to friends and family showed fewer signs of depression than those who had yet to come out. However, they said they did not anticipate that the overall systemic stress, or allostatic load, measured in straight men would exceed all groups.
"Interestingly and contrary to our hypothesis, gay and bisexual men had significantly lower depressive symptoms and allostatic load levels than heterosexual men," wrote lead author Robert-Paul Juster, a neuroscientist at McGill University.
Heterosexual men registered a third higher on an index of allostatic load compared with gay and bisexual men. In contrast, lesbian and bisexual women ranked higher than heterosexual women on the index.