I've heard of people putting their dogs on a raw meat diet. I was thinking doing so myself. Question is; wouldn't raw meat greatly increase the odds of them getting worms?
Nah, they're built for it. Their digestive systems are pretty tough, they can eat spoiled stuff that would make us extremely sick because they have a comparatively high acid content. That would kill the majority of parasites. Dogs do get worms but usually from exposure to other animals feces who are infected.
I had a special breed of cat that we were supposed to feed raw chicken twice a week, vet recommended. It kept the urge to kill at bay, he'd tear through the window screens to get outside.
Hah! I'm reading a book all about human evolution & cooking of food. (Catching Fire: How Cooking Made Us Human) The last few chapters included talk about how a Biologically Appropriate Raw Food (yes, BARF) Diet is a very good option for helping household pets shed extra weight. (I've heard about switching dogs/cats over to raw food for dealing with health issues before, but not with the official name.)
You should ease them into it, just like you would do with switching between foods. (old to new - 3:1, 2:2, 1:3) Cooked/processed foods are much easier to digest, and they won't be able to pull as many nutrients as quickly as from the food, so it's going to be a bit of a shock to the system.