Women are more at risk for stress fractures than men due to factors such as lower aerobic capacity, reduced muscle mass, lower bone mineral density, among other anatomical and hormone-related elements. Women also have a two- to four-times increased risk of stress fractures when suffering from amenorrhea compared to women who are eumenorrheic.[18] Reduced bone health increases the risk of stress fractures and studies have shown an inverse relationship between bone mineral density and stress fracture occurrences.