I saw a picture of Frank from while before his most recent fight. He had a shirt and looked like a stick, maybe 155. I'd probably guess he does and that a lot of MMA guys do, see team Hammer House.
I've heard people on Sherdog accuse Hughs of using. I know UFC tests for title fights but there are of course ways to get around this. He has a very natural looking physique, but his face/jaw seems unnaturally muscular. Anyone think Hughs is juicing?