https://www.washingtonpost.com/news/federal-eye/wp/2014/09/02/why-the-federal-government-spent-3-million-to-study-lesbian-obesity/
Damn Wapo pay wall. Here is one that is open, I hope.
https://publichealth.gwu.edu/content/landmark-study-helps-overweight-lesbian-and-bisexual-women-adopt-healthier-habits