There's a few Dwarves that have come through the portal over the years, and elves. I think a Vulcan or two. Humans are the only ones born to this world, though, and if you don't at least look humanoid, you're changed.
It took a while? I didn't feel comfortable for a long time, but then I got used to it and .. well. I like the food. and I like being able to have sex! And babies - my husband and I wouldn't have been able to have children otherwise. I looked, um. Similar to this - the ones on the left.