Waist-to-hip ratios in women can help providers better evaluate results. Androgens, a class of hormones that includes testosterone, increase waist-to-hip ratios in women by increasing visceral fat (which is carried around the waist). On the upside, increased androgen levels are also associated with increased strength, stamina, and competitiveness. Additionally, cortisol (a hormone that helps the body deal with stressful situations), also increases fat carried around the waist.
Learn more at https://www.sciencedaily.com/releases/2008/12/081201200036.htm.