It's such an obvious problem that the extremely p.c. lesbian community is very reluctant to discuss it. I hereby predict I will be accused of foul intolerance for even linking to a scientific study about it. But obesity is a serious health-problem that should at least be discussed. My hunch is that without shallow, physically-oriented men to appeal to, many lesbians feel even less need to stay in shape than many straight women do. Put that together with the obesity epidemic that affects everyone and you have a serious health issue. That no one is allowed to talk about.