Non-heterosexual minority men have a greater risk of poor bone health than heterosexual men. This is according to a study published in the American Journal of Human Biology, which also noted that this risk appears to be independent of lifestyle and psychosocial factors.
Surprisingly, the study – “Sexual orientation‐based disparities in bone health: Evidence of reduced bone mineral density and mineral content among sexual minority men but not women in multiple NHANES waves” by James K. Gobb and Eric C. Shattuck – did not find that non-heterosexual minority women were more likely to experience poor bone health.
As it is, sexual minorities already have greater risks of several adverse health outcomes. This may be due to a greater prevalence of unhealthy lifestyle factors, including smoking; as well as the significant stresses they experience related to the stigma associated with their sexuality.
But according to the people behind this study, there has been little research looking at whether sexuality has any impact on bone health using assessments of bone mineral density measures or fracture risk.
To examine the association between bone health and sexuality, these researchers combined data on 3,243 adults from the 2007 to 2008, 2009 to 2010, and 2013 to 2014 cycles of US National Health and Nutrition Examination Survey. The data included dual-energy X-ray absorptiometry (DXA) assessments. With an average age of 36 years, the participants included 253 sexual minority people (53 lesbian/gay, 97 bisexual, and 103 same-sex experienced) and 2,990 heterosexuals.
Sexual orientation-based comparisons were made for a number of bone health indicators, including z-scored bone mineral density in the lumbar spine (L1-4 vertebrae) and proximal femur (femoral head, greater trochanter, and intertrochanteric line), bone mineral content in the femur and spine, and osteoporosis risk.
The study reported sexual orientation‐based disparities in bone mass across all anatomical sites. This effect was due to differences between heterosexual and gay men and persisted in linear regressions after adjusting for risk factors.
Differences were also found in femoral and femoral neck BMC in heterosexual and gay men (P = .02) and in femoral, femoral neck and spinal BMC between heterosexual and bisexual women (P = .05). Sexual orientation remained significant in BMC regressions.
“Our findings suggest that sexual minority men but not women are at greater risk for poor bone health relative to heterosexuals and this disparity is independent of the lifestyle and psychosocial risks included in our models,” the researchers stressed.